Well, because none of it is actually reabsorbed, we have 125 plus 500 and that gives us 625 blood volume. Every single minute is cleared. And that means none of that substance will actually remain in our blood plasma. And one example of such a substance is Peh PAH, which stands for the para aminohipric acid. So this is a substance that is essentially completely cleared by our body. Actually, a small percentage of it is left over in the blood plasma, but for all approximation purposes, we can assume that all of it is actually cleared.