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blood sampling

in the beginning of the lecture, we learnt a bit about blood sampling general characteristics, which include whether the blood is desired to be coagulated or not, whther we want plasma or serum

in general, there are 2 types of sampling(on the major level) plasma and serum, each of which is obtained by eiher the presence or the absence of the antigoagulant:
-when it is abscent, we get a serum+a clot, a serum is basically the liquid of the blood
- when it is present, we get a three layer sample, instead of the serum, we have the plasma here, it also represents the liquid of the blood, but, fibrinogen still exists in plasma, while being abscent in the serum.

we learnt a bit about erythrolysis that may occur due to many factors, most of which are either related to the tube itself, the way we inject the needle and withdraw the blod, and, the volume difference which may lead either to osmosis or to passive osmosis
here is the correct way for mimimum damage:

(pleasae watch it, I spent a lot of time searching for a non-indian video)

we learnt a bit about the tubes themselves, each color, or colour, depending on what anglo culture you prefer, embodies a test-related substrate/process

lastly.. the spectrophotometer, which is basically a comparative device that is used to compare an ideal sample representing the condition, and our sample itself.


that was it..I hope I offered more than enough, good luck.