Thank you for standing by. Welcome to Abbott's first quarter 2021 earnings conference call. All participants will be able to listen only until the question- and- answer portion of this call. During the question and answer session, you will be able to ask your question by pressing the star one key on your touchtone phone. Should you become disconnected throughout this conference call, please redial the number provided to you and reference the Abbott earnings call. This call is being recorded by Abbott. With the exception of any participant questions asked during the question- and- answer session, the entire call, including the question- and- answer session, is material copyrighted by Abbott. It cannot be recorded or rebroadcast without Abbott's express written permission. I would now like to introduce Mr. Scott Leinenweber, Vice President, Investor Relations, Licensing and Acquisitions.
Good morning, and thank you for joining us. With me today are Robert Ford, President and Chief Executive Officer, and Bob Funck, Executive Vice President, Finance, and Chief Financial Officer. Robert and Bob will provide opening remarks. Following their comments, we'll take your questions. Before we get started, some statements made today may be forward-looking for purposes of the Private Securities Litigation Reform Act of 1995, including the expected financial results for 2021. Abbott cautions that these forward-looking statements are subject to risk and uncertainties that may cause actual results to differ materially from those indicated in the forward-looking statements. Economic, competitive, governmental, technological, and other factors that may affect Abbott's operations are discussed in Item 1A, Risk Factors, to our annual report on Form 10-K for the year- ended December 31st, 2020.
Abbott undertakes no obligation to release publicly any revisions to forward-looking statements as a result of subsequent events or development, except as required by law. Please note that financial information provided on the call today for sales, EPS, and line items of the P&L will be for continuing operations only. On today's conference call, as in the past, non-GAAP financial measures will be used to help investors understand Abbott's ongoing business performance. These non-GAAP financial measures are reconciled with the comparable GAAP financial measures in our earnings news release and regulatory filings from today, which are available on our website at abbott.com. Unless otherwise noted, our commentary on sales growth refers to organic sales growth, which excludes the impact of foreign exchange. With that, I will now turn the call over to Robert.
Thanks, Scott. Good morning, everyone, and thank you for joining us. Today, we reported the results of a very strong quarter. Ongoing earnings per share were $1.32, reflecting more than 100% growth compared to the prior year. Sales increased 33% on an all organic basis in the quarter. At the start of the year, we issued full- year guidance that reflected another year of strong performance, and through the first quarter, we're right on track with those expectations. Our full- year 2021 adjusted earnings per share guidance of at least $5 remains unchanged and reflects over 35% growth compared to last year. Our strong first quarter were comprised of several factors, including global COVID testing related sales of $2.2 billion, with rapid tests comprising roughly 85% of those sales.
Strong sales growth across all four of our major business areas, which resulted in base business organic sales growth, excluding COVID testing related sales, of nearly 6%. Growth contributions and momentum from several recently launched products across all of our businesses, and the impact of significant investments we're making across our portfolio in R&D and commercial initiatives that will further strengthen our sustainable growth profile. I'll now summarize our first quarter results before turning the call over to Bob. I'll start with nutrition, where sales increased nearly 6.5% in the quarter. Performance was led by our adult nutrition business with sales growth of more than 18% in the quarter.
The pandemic has brought a lot of awareness to the value of good nutrition, including immune support, which is helping to bring new users into the category and more specifically, to our market leading Ensure and Glucerna brands. Pediatric nutrition sales declined 2.5% in the quarter. Recall, during the first quarter of last year, this business experienced significant pantry stocking ahead of the shelter in place restrictions in several countries at the start of the global pandemic. Our sales growth this quarter in pediatric nutrition reflects that difficult year-over-year comparison. In the U.S. and several international markets, we continue to capture share with our leading portfolio of infant formula and toddler brands. In diagnostics, sales increased 115%, which was led by significant demand for our portfolio of COVID-19 tests, as well as improvement in the base business.
As I mentioned earlier, strong COVID testing related sales were led by our rapid point-of-care platforms, ID NOW, BinaxNOW, and Panbio, as we continue to see demand shift towards rapid testing worldwide. During the quarter, BinaxNOW received U.S. emergency use authorization for over-the-counter, non-prescription, self-use for people with or without symptoms. We began shipping test kits to major retailers yesterday. Just as importantly, our underlying base business continues to improve, driven by improving routine diagnostic testing levels and the continued rollout of our Alinity platforms. Excluding COVID testing related sales, our Core Lab and molecular diagnostic businesses both achieved double-digit sales growth in the quarter. Turning to Established Pharmaceuticals, where sales grew over 6% in the quarter, which is particularly strong given the comparison versus a strong first quarter last year. Performance in the quarter was led by double-digit sales growth in India, China, and Brazil.
While we continue to see elevated COVID case levels across several emerging markets, the business is executing at a high level to ensure patients have access to our branded generic medicines. Lastly, I'll cover medical devices, where sales grew nearly 9% in the quarter, led by strong growth in Structural Heart, rhythm management, electrophysiology, and diabetes care. Although procedure volumes across our cardiovascular and neuromodulation businesses were impacted early in the year by elevated COVID case rates in certain countries, including the U.S. We saw growth improve throughout the quarter and exited with good momentum. On average in March, U.S. procedure levels were up mid-single digits compared to pre-COVID baselines across our cardiovascular business, with some areas even higher. In Structural Heart, sales were up mid-teens overall, with growth contributions coming from several products within our innovative portfolio, including MitraClip, TriClip, Portico and others.
MitraClip sales grew more than 15% in the U.S., where we achieved our highest number of monthly procedures ever in the month of March. In January, CMS expanded reimbursement coverage for MitraClip, which significantly increases the number of people who can benefit from this market-leading device. I'll wrap up with diabetes care, where growth was led by FreeStyle Libre sales of nearly $830 million. The global user base for Libre has now surpassed three million users, driven by market expansion and awareness efforts as well as ongoing new product launch activity in every major market around the world. In summary, we're off to a very strong start and right on track with our expectations for the year. All four of our major businesses are achieving strong growth.
We're particularly pleased with the growth contributions and momentum of several recently launched products, and we're well positioned to achieve more than 35% EPS growth as we have forecasted at the beginning of the year. Now I'll turn over the call to Bob to discuss our results and outlook for the year in more detail. Bob?
Thanks, Robert. As Scott mentioned earlier, please note that all references to sales growth rates, unless otherwise noted, are on an organic basis, which is consistent with our previous guidance. Turning to our results. Sales for the first quarter increased 32.9%, which was led by strong performance across all of our businesses, along with strong global COVID testing related sales. Organic sales growth was balanced with 34% growth in the U.S. and 32% growth internationally. COVID testing related sales were also balanced geographically, with a little more than half of those sales coming from international markets. Foreign exchange had a favorable year-over-year impact of 2.5% on first quarter sales. During the quarter, we saw the U.S. dollar strengthen somewhat versus several currencies, which resulted in a slightly less favorable impact on sales compared to exchange rates at the time of our earnings call in January.
Based on current rates, we would expect exchange to have a favorable impact of approximately 4% on our second quarter reported sales and would now expect exchange to have a favorable impact of nearly 2% on our full- year 2021 sales. Regarding other aspects of the P&L for the first quarter, the adjusted gross margin ratio was 58.3% of sales. Adjusted R&D investment was 6% of sales, and adjusted SG&A expense was 25.1% of sales. As Robert mentioned, the strength of our business performance has created an opportunity to significantly increase our investments in R&D and SG&A to further strengthen our pipeline and growth initiatives. During the first quarter, our combined investments in these areas increased approximately $200 million compared to the same quarter last year and was at the highest level since our separation with AbbVie.
For the first quarter, net interest expense was $124 million, non-operating income was $73 million, our adjusted tax rate was 15%, which is consistent with our full- year effective tax rate from last year. With that, we'll now open the call for questions.
Thank you. Ladies and gentlemen, if you have a question at this time, please press the star then the number one key on your touch-tone telephone. If your question has been answered or you wish to remove yourself from the queue, please press the pound key for upmost sound quality. We kindly ask that you please use your handset instead of your speakerphone when asking your questions. And again, ladies and gentlemen, that star and then one to ask the question. Ladies and gentlemen, Our first question comes from Bob Hopkins from Bank of America. Your line is open.
Thanks, and good morning. Congratulations on such a strong Q1 revenue and profit growth. I don't think I can recall the last time a company put up 100% earnings growth. Impressive there. I guess I'd love to hear your thoughts on two important topics, Robert, if you don't mind. The first topic is BinaxNOW OTC. I was wondering if you could just talk a little bit about capacity and your early thoughts on how you think demand will play out for that product. That's the first topic. Then I'll just go ahead and list the second one in the interest of time. The second topic is a little bit longer- term-oriented, last quarter, you expressed some confidence in Abbott's ability to drive double-digit earnings growth in 2022 off of that $5 number for this year.
The question I would have is, based on what you're seeing today, has anything changed with your views? I think investors would also love to hear if you assume a more conservative testing scenario, how does that impact that goal of double-digit earnings growth next year? Just wanted to list it all up front there, and thanks for taking the questions.
Okay, thanks. On your first question regarding kind of the U.S. BinaxNOW OTC launch. Yeah, we're very excited about that. We see this as a significant opportunity and quite frankly, a trend that's been happening overseas and is kind of now happening here in the U.S., which is this accelerated move here from, say, more hospital lab-based testing to more rapid testing outside of that environment where consumers and people can get the results at a much faster rate, and quite frankly, with a little bit of less hassle, less process. We see this as a significant opportunity. It's easy, it's affordable, and I think that's a key part here, Bob, as we think about surveillance testing and serial testing. It needs to contemplate those two areas, right? It needs to be affordable.
It's difficult to do serial testing on PCR when you've got a cost of $100+ and takes between 2-3 days to get that. I think we're in a great opportunity here to be able to capitalize on that. I think this is something that people are going to want to buy and have in their homes and stock up in their homes. Think of it as maybe your new element in your medicine cabinet. We've been seeing this shift happen towards the end of last year and definitely into this quarter here, this move towards rapid.
Specifically in the U.S., we've got a great position as a lot of this OTC is going to require understanding of the retail and the retail environment, the retail channel, and those are capabilities that, as you know, through our nutrition business, through our diabetes business, we know how to operate and operate pretty well in there. We're excited, and I think this is going to eliminate a lot of the barriers that exist for frequent testing. A key aspect of that is obviously scale. We have to have the scale to be able to meet the demand. Quite frankly, we're probably the leaders here in terms of production. We've got an established capacity this quarter now that we can do about 150 million rapid tests per month across all of our different platforms. We feel very good about that position. We feel good about this opportunity.
To your second question on 2022. You did mention our confidence back in January, and we commented it on our call. To be honest, nothing's changed on that front. Nothing's changed over the last 90 days. We start our planning process every year. We target double-digit growth, and we talked about some of the key elements and laid out some of the key elements that allowed us to have that confidence to be able to drive that double digits in 2022, whether it's the pace of recovery or our base business, COVID testing, new product launches, investment spend, et cetera. None of that has changed. If you look at the pace of our recovery on our base business, that's done very well. cardio and neuro finished the quarter very strong. We grew double digits, as I said in my prepared remarks in Core Lab and molecular diagnostics, excluding COVID.
Libre is growing rapidly. Nutrition and EPD are accelerating their growth rates with pipeline and a market that supports that sustained growth. We've got momentum with a lot of our product launches, MitraClip G4, TriClip, I'd say our mapping systems, our new CRM devices. We've got coming out of this year, going into next year, four key product launches that we feel very good about. We're very excited about them, given our position, given the product offering, and the value proposition of them. You know those are LAA, entering the LAA market here in the U.S., potential expansion of indication for CardioMEMS, entering the leadless pacemaker with single chamber and then follow that with a dual chamber, entering the U.S. TAVR market.
All four of those opportunities are multi-billion dollar segments, and we've been working hard over the last, call it 18 months, to get us ready to be in a position in 2022 to be able to capitalize on that. The underlying base business. The pipeline, all of that is heading in the right direction. Don't see any changes. If anything, there's acceleration to what we talked about 90 days ago. We continue to believe a good portion of the COVID testing is sustainable. As I said, there's a clear trend here to move towards rapid formats. We're the dominant producer here of these rapid tests, making about 150 million a month. Wherever that market goes, we know that we'll be the share leader here for sure. You look at all these different components here, Bob, we still feel very confident about our double- digit.
The one thing I'll say is that as you look at all these different businesses, probably one thing that we can try and model now, but it'll probably be different January, is just how the mix of those businesses are going to contribute to that double-digit growth. It always ends up differently in terms of how we planned. We did double-digit in 2020, and it was very different versus how we set it up in January of 2020. If you look at our history, we're pretty consistent about delivering on that. If there's any caution here, I guess, for next year, it would already seem to be priced here into our PEs. That being said, I don't think anything has changed here from the last 90 days from our perspective. We feel very good about our double-digit.
That's great. Thank you. Just if it was a more conservative testing environment, how does that impact the way you think about things?
I guess that's the model here where we start to model different ways, different parts of all these elements that I explained to you, and it's going to be difficult. I'm not going to put out an assumption there of what COVID testing level is required, but I do feel that a good portion of it is going to be sustainable, and we'll get a lot of the share of the COVID testing that's remained.
Great. Thanks for taking the questions.
Thank you. Our next question comes from Robbie Marcus from JP Morgan. Your line is open.
Oh, great. I'll echo Bob's congratulations on a very nice quarter. Maybe just to follow up, Robert, I'd love to get a sense. One of the key investor topics, as you just touched on, is the double-digit target for EPS growth next year. Part of that, it looks like you're front-loading a lot of expenses into 2021 here. You grew OpEx about $300 million versus last year. I'd love to see if I could just get a little more meat on the bones in terms of the roadmap to that double-digit EPS, more down the P&L versus the top line, which you just talked about. Does it imply sort of high 20s operating margins to get there? Thanks.
On the high 20s operating margin, yeah, that does to be the case. Regarding the areas investment, I talk a lot about these in terms of the investments we're making. I'd say from a bigger picture perspective, we want to make sure that we're spending and investing a good portion of these COVID testing profits into the R&D portion of the P&L. We believe that is a very sustainable investment, and if I look across all the businesses in devices, in diagnostics, in rapid diagnostics, in nutrition, all of these businesses have opportunities to invest in R&Ds, and we've got clear programs across all of them to build the R&D programs that will sustain our growth beyond 2022, 2023, 2024.
A lot of the products that I just mentioned, whether it's the ones we've just launched over the last quarter, two or three quarters, plus the four key areas that we're looking at entering in 2022, those are going to drive a lot of our revenue growth, and those have already been funded. I would say the investments here are really looking into next generation products in diagnostics, expansion in our portfolio in devices that will lead to new product launches in 2023 and 2024. On the SG&A side, we're making sure that we're supporting our big growth products. I'd say probably a lot of the SG&A is going towards Libre and driving Libre awareness and growth, both in the U.S. and international markets.
You'll start to see that ramp up even more as we go throughout the year, both in terms of the spend and the return on the top line. We're making investments also in nutrition to strengthen our brands and capitalize on the expansion, especially in the adult nutrition side of the market. Expanding footprint in several of our device businesses where we know that clinical specialists and sales force, et cetera, is important to be able to support not only the expansion of our current products, but the launch of new products.
Great. Really helpful. Maybe just a quick follow-up. We're all really interested to hear not just about how the devices business did in first quarter, but really the forward commentary and what you're seeing exiting March and into April here. If you have any early feedback on the exit rates and what you're expecting in terms of catch-up, that'd be really helpful. Thanks a lot.
Yeah, I think as I said in my prepared comments and on the first question, too, we saw a nice recovery. There was obviously a little bit of a slowdown in January. We had a nice pickup, I'd say, in October, November, where we saw procedure growth rates return to growth. I'd say December, January saw that decline as the cases increased, but saw a real nice progression in the month of February and then very strong growth in March. Robert, what we try to do also is we try to look at, March is a tricky month because you've got those two weeks of last year where things kind of really shut down. We look at March not only versus last year, but also looking at it versus March of 2019 and quite frankly, the whole quarter versus 2019.
We actually see growth rates in this quarter that are higher than our pre-pandemic rates in 2019, in Q1 2019. I think we saw a real nice growth in Core Lab. That was very positive to see. We saw double-digit growth there, and that's a good indicator of routine testing coming back to hospitals, saw double-digit there. Our molecular diagnostic business, excluding COVID and PCR COVID, was up 30%. That's a real positive sign that our strategy of utilizing the Alinity m to launch into the market with COVID and then kind of build off the menu is also having a positive impact over there, too. I'd say very good exit rate. As we look at the first two weeks of April, and we look at it every week here, a real nice progression.
I didn't see the bolus coming in and then the drop. I actually saw continued nice improvement in STRAT, in EP, and even in CRM. That's a nice trend as we're going into the second quarter, too. We'll start to see a little bit of opening up here in Europe. I'd say the one area that was a little bit softer for us was Europe, given all the shutdowns there. Again, I'd say the first couple of weeks in Europe are looking pretty good.
That's great to hear. Appreciate the color. Thanks.
Thank you. Our next question comes from Larry Biegelsen from Wells Fargo. Your line is open.
Good morning. Thanks for taking the question. Bob, one for me on capital allocation and one on your favorite topic, I think, Libre. A lot of questions around 2022, and my question is, how important is it to hit that double-digit EPS growth target in 2022? Your thoughts around capital allocation helping you achieve the $5.50 in EPS. Is a buyback or an accretive deal something you would consider to get there? I had one follow-up on Libre.
Sure. We start every year, as I said, targeting double- digit. If you look at where we are in 2021 versus 2019, we're up 53%. We'll be targeting, as I said, double- digit in 2022. Again, there's multiple ways of how we can get there in terms of business mix, et cetera. We do have strong balance sheet, and that provides us a lot of strategic flexibility. We try to have a balanced approach there, Larry, in terms of balancing between the short and the long- term, investing the business and providing some of that return back to our shareholders. There is an important dividend. We're committed to a strong growing dividend. It's an important part of our identity. On the share repurchasing, we've historically just looked at share repurchasing to offset some of the dilution.
We could be looking to do a little bit more than that in this year, going into next year. From an M&A perspective, I'd say we're always actively monitoring, we're always actively looking, and you'll always hear me say that I'm not going to tip my hand and give up any kind of competitive advantage there. If there's something that is attractive, something that has got growth that won't dilute our top-line growth profile, which I think is best in class, or that we can do better with, we're always going to be interested. We're always going to be prudent about deploying our cash, Larry, always keeping our shareholders happy, balancing the long- term, the short- term, the internal, and the external. This is not a kind of a new CEO versus prior CEO philosophy. This has always been an Abbott philosophy.
We're good stewards of that capital and good stewards of finding that right balance that I just described.
That's very helpful. On Libre, how should we think about the growth for the remainder of the year? The comps get a little easier. You talked about 40% as an aspirational goal on the last call. Just what's the latest on the Libre 3 launch in Europe? If you'll give us any color on the U.S., it would be certainly appreciated, but I'm not sure we'll get it today. Thank you for taking the questions.
Sure. Well, I did put out a goal of growing 40% in 2021. You mentioned comparison. Yeah, you've got a little bit of a balance here between Q1 and Q2. Q1 last year, we saw some stocking up in international and in the U.S. I look at our 30% here and on top of a pretty strong quarter last year as really positive momentum. We'll have some effect on the reverse side of that in Q2. It becomes really a second half, can we kind of sustain this kind of mid-30s and accelerate it into the 40s in the second half? The answer is, we believe so. We've got a great portfolio.
We've got great momentum and making the investments, whether it's field force, whether it's direct consumer advertising, not just in the U.S. but around the world, significant investments to building awareness for the category. I mean, we've surpassed 3 million users around the world. That's 3. We could say, Hey, that's 3x our next competitor, but the reality is, the penetration for us and for the categories is still pretty significant. There's plenty of room here for us to invest and grow. We'll be doing that on the back of not only our commercial investments, but also R&D. Your question on Libre 3, we launched that into Europe at the end of this quarter. We're right where we want to be. We start off usually small and focused here, Larry. We learn with the consumer. We learn with the HCP in terms of what resonates.
We learn with our manufacturing. We've got a lot of capabilities in terms of how to manufacture at scale. There's always a little bit of a learning curve here. It is a new platform. We learn with insurance and insurance switches over and all those things. Once we get all of that kind of lined up, then we accelerate and we go big. We've got a lot of strategic flexibility here with Libre 2 and Libre 3. I think we're in a great position. Feedback has been really good. We've launched this with about over 1,000 HCPs. We've got close to a couple of hundred patients that we've now kind of just try to see what their reactions are with the products, and it's been extremely positive. There's a lot of social media there.
I'm not very fluent in German, but I can tell a facial expression of awesomeness and coolness and amazement factor, and you can see those in the videos of these patients that are using it. I think this is going to set a whole new standard for us on every dimension, size, ease of use, accuracy, alarm performance, wear experience, all that. It's all great. It's all good. Regarding your question on Libre timeframe, I think you answered it, so that's good. I'm not going to provide any details here, but I'm just really excited about Libre 3 and the combination of the portfolio of having both 2 and 3. I just think it provides us a lot of strategic flexibility.
Thanks so much.
Thank you. Our next question comes from Vijay Kumar from Evercore ISI. Your line is open.
Hey, guys. Congrats on the print, and thanks for taking my question. Bob, I did want to ask you on fiscal 2021. If I look at Q1, excluding contribution from COVID, the base business looks like it was up 10% organic versus pre-pandemic in the 2019 levels. One, is that math correct? If we're starting off at 10%, I guess, are we looking at perhaps teens kind of growth for fiscal 2021 on the top line on the base business?
Hi, Vijay. This is Bob. Your math is spot on. Our first quarter was up over 2019 by around 10%. We had really good performance in the quarter in the base business, you really saw that across kind of the portfolio of businesses. We would expect to continue to see strong growth during the course of the rest of the year, in particular as medical device procedures continue to improve. We would expect to see kind of that base business growth in the mid-teens.
That's helpful, guys. One on the antigen testing side. I saw the press release yesterday launching the asymptomatic consumer version of the product. I guess, how are revenues recognized? Is this recognized on shipment? What is early demand looking like from the retailers, right? The CVS and Walgreens, Walmart. Is your expectation of $6.5 billion-$7 billion for fiscal 2021, is that unchanged? Thank you.
Yeah. On the $6.5 billion-$7 billion , yeah, that remains unchanged. It's difficult to forecast here in that tight range that you would expect from Abbott. Yeah, we continue to forecast sales at around that level. Regarding your question, I think it was regarding the BinaxNOW OTC in the U.S., correct? Is that what you're referring to?
Correct.
Yeah. Yeah, we received approval for the product several weeks ago, and we immediately started our manufacturing process. It is a different presentation from the previous Binax test, in which we provide two tests and the necessary consumables to run those tests. We started manufacturing that and began shipping literally yesterday to retailers. We'll start with CVS, Walgreens, Walmart, and you can expect all the other retailers, food merchants, et cetera, to roll into that as we expand and start manufacturing and accelerating our manufacturing. Yeah, we ship the product, and the revenue is booked when the asset is transferred over to the retailer. I think this is going to be, as I said, a great opportunity. It's a channel we know very well.
I think few diagnostic companies that have this product have the capacity, the manufacturing scale, and the channel experience and domain here to kind of really compete. We feel very good about our position. We'll start off with initial stocking orders, and then from then we'll roll out more distribution. We expect, given the price point here, Vijay, that there's going to be a great opportunity for a lot of households in the U.S. to be able to have testing on hand, ready to go at their house. We expect that there'll be a nice repeat purchase also.
I'm planning on stocking up, Robert. Thanks for your comments.
Bye. Thank you for that.
Thank you. Our next question comes from Matt Miksic from Credit Suisse. Your line is open.
Hi. Just a quick question from me, if I could. It's just on some of the pipeline opportunities around Amulet and CardioMEMS and Portico. If you could provide us with maybe an update on those programs and secondly, on just the progression of MitraClip. This has been a device and procedure that was a little bit more impacted by the slowdown over the winter. Just love to get a sense of what the trajectory looks like now heading into Q2. Thanks.
A couple there. On the Amulet side, yeah, listen, we've got experience in this category outside of the United States in the international markets, and the product does very well. We filed with the FDA late last year. We think this is a very attractive market. It's approaching $1 billion today, and it's growing double digits. As I said, I think Amulet is a very competitive product in its current form. We'll obviously be investing as part of some of those R&D investments I mentioned in next generations there also. Even in its current format, performs very well, and we've got a great experience in Europe. We believe a lot in this market, in this segment, We've also initiated our CATALYST trial.
We started a new trial late last year, and this is a trial comparing Amulet to NOAC drugs, which is currently the standard treatment option for people with AF that are at risk of a stroke. We think that this will be a significant kind of growth driver after we launch also. Results there will take a little bit longer to divulge those are probably in the 2023 timeframe. It just shows our commitment to this segment because we believe we've got a great product, great product portfolio, a pipeline, and it's a great segment here. I think you had another question on MitraClip. MitraClip did very well in the quarter. Obviously, it got impacted by COVID last year. It was on a great trajectory. It kind of got slowed down as obviously the ICU beds and hospitals moved towards treating COVID.
We had great growth in Q1. We're up in the mid-teens in the U.S. That was good. As I said in my prepared comments, we had our highest number of procedures ever in the month of March. That wasn't just catch-up because I've looked at the procedures in the first two weeks of April, and they continue to move up. That's very positive for us. We're making our investments not only on the pipeline side, new versions of MitraClip, but also more importantly in the market development. Really to expand the funnel of patients being treated, creating those patient referral networks with the cardiologists and our implanting centers. That's done very well, and I think the NCD that got approved in January opens up a significant opportunity for us with MitraClip.
Remember, we're only about 5%- 6%, maybe 7% penetrated right now in the total available market here, and I think that we've got a lot of runway for growth in the mitral space. I think you also had a question on CardioMEMS. We expect to file for a label expansion relatively soon. This would also significantly broaden the U.S. market opportunity, and we plan to pursue CMS reimbursement after we obtain that label expansion. This segment continues to grow. Our Q1 growth in CardioMEMS was north of 20%, and that market has started to recover also from the pandemic, and I like the position we have in them.
Thank you. Our next question comes from Matt Taylor from UBS. Your line is open.
Hi. Thank you for taking the question. I wanted to go back to the idea of the double-digit growth and the investments that you're making this year. You called out R&D, and we've seen DTC has been stepping up. I think there's a lot of Libre commercials there now. I guess my question is, when you think about these investments and the sustainability, historically, we've thought about Abbott as driving 7% growth. That was your algorithm pre-COVID. Do you think that the investments could lead to more sustainable, higher post-COVID organic growth? And then how quickly can you toggle them up and down if the environment changes quickly to manage earnings?
Sure. I'd say on the base business side, our identity, our target was really sustaining a 7%-8% growth rate pre-COVID. I'd say with these investments that we're making, excluding any kind of year-over-year comp, we'd probably be at the higher end of that 7%-8% range. Once you factor in maybe a Q1 comparison on the base business next year, probably growing a little bit higher than that, Matt. At the high end of that 7%-8% is what we're looking at with all these investments and product development and portfolio development. As I said, a big portion of our COVID cash flows and profits, part of it goes to our shareholders, but part of it goes back into the business. We've got a lot of flexibility here to toggle that investment up or down if we need to.
I'd probably say that each business has their list of go-to areas that we've all agreed to are kind of next steps if we have more opportunity to invest in the business. We know exactly where to go. As it relates to toggling down, I wouldn't be toggling down R&D. I think that's more of a sustainable kind of investment that sustains our growth rate. It's easier to toggle on SG&A, and we've got that capabilities also if we need to.
Great. I just had a follow-up on diagnostics. The underlying growth, as you called out in Core Lab and molecular, was impressive. I'm wondering if we're going to see you get increased momentum in the underlying business because of your success with COVID diagnostics. Do you think you can leverage that larger install base and drive to higher growth in the core diagnostic business over time now?
Yeah, I think the answer to that is yes. We've definitely been elevated to a kind of higher level of partnership here with a lot of hospitals and IDNs and institutions as it relates to their kind of COVID testing. There's been large set of accounts that we've historically been out of and now have had the opportunity to place our instruments and show what we can do. The answer to that is, yeah, on the Core Lab for sure. You're seeing a little bit of that strategy play out in the molecular side of the business where we haven't seen these kind of growth rates in our molecular business excluding COVID in a very long time, and we were up close to 30% excluding COVID testing.
A lot of that has to do with the instruments that we're placing and getting the test pull through on the other assays, on the other tests. On the rapid side too, I wouldn't just look at it from a Core Lab perspective. The sustainability of COVID, one portion of it is the actual COVID test. The other portion of it is the installed base that we're placing as a result of that. I talked a little bit about this building sustainability of a rapid testing channel beyond just COVID, and COVID's allowing us to do that. If you think about, for example, our ID NOW instrument, where we basically seeded the market here for an opportunity to do much more in the world outside of COVID by placing these instruments. We had roughly about 19,000 boxes in the U.S. in 2019, and we're currently at 75,000 boxes.
We almost quadrupled our installed base there. Will they all be as productive from a COVID testing perspective at the highest level of the pandemic one, two years out? No, probably not. They'll be very productive with all of our other assays, and that installed base will continue to grow and will continue to produce for us. To answer your question, yeah, I do think this is a great opportunity here for us to continue to roll out our Alinity platform on the Core Lab, on the molecular side, and continue to build our rapid testing channel in the rapids business.
Great. Thanks, Rob.
Thank you. Our next question comes from Joanne Wuensch from Citibank. Your line is open.
Thank you very much for taking the questions. I'll just put them both up front. Can you give us an idea of how you're thinking about revenue for the remainder of the year? Particularly, I'm going to get questions about COVID-19 diagnostic revenue in 2021. My second question has to do with the other areas of Medtech that are starting to support or continue to support that high single-digit growth rate. Anything you can add color on Neuromod, Vascular, or CRM would be helpful. Thank you.
Sure. Kind of growth rate in our diagnostic business, the way to think about it is, at least how we've modeled it is we'll see our, let's call it non-COVID diagnostic business continue to accelerate, continue to grow. Obviously, you'll have comps over there, Joanne, in Q2 and Q3 that will be producing some mid-teens kind of growth numbers in this business. I think we always look at it, at least the way we're managing it here, is we're always looking at it on a two-year CAGR. If we can get back up to that kind of 10%, 11%, 12% growth rate that we were seeing in our Core Lab business on a two-year CAGR, that's basically our target to be able to get to those numbers. COVID testing, it's difficult to forecast right now. I can't give you an exact quarterly progression of that.
I think the range that we've given last call, I continue to reiterate it, but it's going to be a little bit difficult here to get the exact calendarization, the exact mix, the exact geography right in terms of the COVID testing. What I will say, though, is that I do continue to believe that the shift from lab-based PCR will still play a role in COVID, but I think that the bigger role will be played by the rapid testing as it relates to surveillance. As I said, I think we're well-positioned there. I think your second question was regarding some of the other devices. I'd say, listen, I'm very pleased with CRM. I'm not saying that we've completely turned it around, but it's a great progression that we're seeing here.
The launch of our ICDs and CRT-Ds with the Gallant brand with Bluetooth capability in Europe and U.S. All of the numbers show that we're picking up share, and that's the ultimate measure here. I'm excited about the ability for us to enter the leadless segment in next year with our product and the capabilities and the value proposition that that product will bring versus competitive systems. I think that's done very well. I'd say heart failure. One of the challenges there is, that's probably the slowest part of the device portfolio to recover. A lot of those procedures require some ICU stays. I think that one was one where we saw a little bit of impact to market. I'd say our share is still pretty high, around the mid 80%s, 85%. That's mostly a market condition that we'll see come back.
I think that the CardioMEMS is another great opportunity for us, where we saw growth in the quarter for 26%. I don't know if I covered all the device areas that you wanted me to hit on.
If you could hit on Neuro mod, that would be great. Thank you.
Yeah. We did see a little bit of a slowdown in trials towards the end of the year and the beginning of the year, and we saw that start to pick up a little bit now. We think that we like our position. We recently launched our remote programming and monitoring system, the NeuroSphere. I think that's going to create a whole new opportunity for us in terms of business model, in terms of our ability to service the patients and the physicians better with that. We started to roll it out in the U.S. I think it applies to both SCS and DBS too. We've gotten great feedback on that, so I think that we'll see sequential improvement on our performance in neuro, not only as we lap the comps, but also as the NeuroSphere gets widely used.
We've got a nice pipeline of products to be launching towards the end of the year here.
Thank you very much.
Operator, we'll take one more question.
Thank you. Our last question comes from Josh Jennings from Cowen. Your line is open.
Hi, good morning. Thanks for taking the questions and congratulations on the quarter. I wanted to, Rob, just ask about your commentary about the potential to pursue M&A to support that, if need be, to support the double-digit earnings growth in 2022. Anything you can provide investors or analysts with in terms of the areas of focus. I mean, should we be thinking that each business unit could receive some support with the acquisition? Specifically on Medical Devices, just to follow up with Joanne's question, should we be thinking about potentially bolstering Heart Failure, Vascular, Neurom od, or some of the softer businesses here? I mean, you have such a pipeline and had such success with internal development initiatives. Is this a Medical Device scenario where you could add? Lastly, just on the Structural Heart business.
In the U.S., you're going to be adding Amulet and Portico in the near- term. How are you thinking about You mentioned the specialized sales force, but should we be thinking about individual sales teams for MitraClip, TAVR, and left atrial appendage occlusion? How could that all shape out? Thank you for taking the questions.
Yeah. I think on the M&A side, you'll hear me say the same thing, which is, I think it always starts off strategically. Does the business that we're looking at have a strategic fit to Abbott, both from a market position, from a financial standpoint? We wouldn't be looking at anything that doesn't fit us strategically just to fill an EPS. We want businesses that we can grow, that we can obviously operate, and can fit well into the company. I think it always starts like that. It always starts with the strategic fit. If it's attractive, if the timing is right, then we'll look at it. I think all the areas that you mentioned are all areas that we look at. We look at all those areas that you mentioned. We look at diagnostics. We look at all the areas.
We're always studying, and we're always paying attention to the new technologies, the new companies, et cetera. I just wouldn't tip my hand here and give anything away in terms of our competitive position here. Regarding your second question on sales forces, it always depends. We tend to have a viewpoint here, Josh, where we believe that kind of focus and dedicated teams has always been best. That's kind of how we've run our businesses. It's how we've run our businesses for many, many decades. We don't try and bring things together that don't make sense just for the sake of synergies. If we believe we're in growth areas and growth businesses, then we'll fund them as growth business and growth areas. Quite frankly, all the businesses that you talked about in Structural Heart are areas of high potential growth.
We will treat them and resource them as such. I'll just close here by saying we set guidance of at least $5, which is about 35% growth year-over-year. That's after 13% growth in 2020, and we feel very good about our first quarter. We feel that our first quarter puts us on track to achieve at least those $5. We have multiple ways to get there. The COVID market is going to move more and more towards rapid, and our position in this segment of COVID testing is unmatched with our capabilities, our scale, et cetera, and we believe a good portion of those tests, of that COVID testing market will remain at least into 2022. I'm very pleased with the pace of recovery of our base business, Abbott, or let's call it the non-COVID side of our business.
We're making investments in 2021 so we can accelerate our growth in 2022 and beyond, and we've talked about this also. We feel very good about the position we're in today and the position we have this year and going into next year.
Very good. Thank you, operator, and thank you for all of your questions. This now concludes Abbott's conference call. A webcast replay of this call will be available after 11:00 A.M. Central Time today on abbottinvestor.com. Thank you for joining us today.
Ladies and gentlemen, this concludes today's conference call. Thank you for your participation, and you may now disconnect. Everyone, have a wonderful day.