Hi, my name is Jan, and I'm the processing lab supervisor, so I'm going to kind of lead you through what happens to the tubes, after they get to the lab. So, we draw a cluster, what we call in the lab, of five tubes. So, there are three that are purple-topped tubes, and two that are red-topped tubes. The reason why we do that is because the manufacturers have a sample, requirement, for the type of sample we're actually using on the test. So, the purple-topped tube, the blood is prevented from clotting, so as you can see it will remix easily. These have settled down. And then a clot tube allows the blood to clot, so it will actually form a clot. The difference between the fluid then, is, in the purple-topped tube, it does not, it isn't allowed to clot, that's called plasma. So, some of the tests especially all of our NAT testing is, requires plasma. Whereas, our viral marker testing, this is a clot tube here, see the clot there? This is called serum. The difference between, one doesn't have all the clotting factors in it, and the other does. So, we will bring the tubes in. We sort them, because they're sorted by base, of where we'll actually do the testing. And then we'll spin them down. And depending then, after we spin them down, we have to look at, to see the quality of the serum with the plasma. For instance, this sample right here is a really good example of a patient that has really high fats in their blood. So, this is very lipemic. So, this one we can't use for testing. We'll usually ask the donors to lay off the fats and come back, and it won't be a problem. And then another one is whether the red cells have been ruptured during the draw. So, that's called hemolysis. And, if this gets too red, then we can't test it either. So, those samples, if we can't test it, then unfortunately, we can't use the unit. Do you want the (indistinct)
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