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A member asked:
What are the reasons doctors draw so much blood for a blood test?
A doctor has provided 1 answer
Depends ?many tests : Complete blood count & routine chemistries together should require no more than 10ml (2 teaspoons full) blood typing & cross-match, if you need surgery where blood may need 2B replaced will require another 5 ml. Other special tests may require further 5 ml. Looks a lot in a syringe or test tube.
Answered 2/13/2015
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