Glenn Eisenberg
Management
Yes, Ralph. Yeah. From our perspective, it's kind of an interesting viewpoint because as we go into 2021 and look at a comp to 2020, obviously, we see significant growth in both - in our base businesses because it's coming off of the pandemic here. As we look back to 2019 kind of pre pandemic levels, to your point, your growth rates, we actually look at it even on a compound growth rate, let's say, is that kind of fitting in within our historical growth rates. And the guidance range that we have kind of implies, obviously, we're getting a range. But for both businesses, clearly at the upper end of the range that we're back to kind of the normal historical growth. And so as we think about the pieces, so first, within diagnostics, while we've already seen a favorable revenue trend in the fourth quarter compared to 2019, so revenue is already there, but our volume wasn't. We were down, call it, around 8% in the fourth quarter. So the range that we have as we look to 2019 is that, for the most part, call it, the mid part of the guidance that the volume now will get back to 2019 levels, call it, in the midyear to second half of the year. And again, the price will come down to more historical levels as well. But similarly, within the drug development side of the business, we've already had good growth compared to a year ago, and we expect that to continue relative to 2019 levels, where, again, the range, if you looked at it as a CAGR to 2019 similarly, within the range, gets us back to our historical growth rates, again, depending where you are in the range. So with the recognition that there's still going to be some softness in the base business that's expected in the first half of 2021 because of the pandemic still here the vaccine not broadly available. But clearly, with the second half of the year expectations, we're now growing relative to 2019 at a more historical level.