Lab Technicians Question:
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What is the difference between plasma and serum?


Plasma is an anticoagulant and serum is a clot activator
therefore when blood mixes with plasma it cannot become or
make a clot, but when it is mixed with serum it clots. Many
anticoagulants contain calcium which binds with blood,
other contain potassium oxalate which can act as a
preservative for the blood.
When blood is mixed with serum it will clot faster because
many contain thrombin which coagulates faster and other
thixotropic gel which acts as thrombin.

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