A member asked:

Is it dangerous for doctors to take so much blood for lab work? should i be worried about fainting or anything like that?

A doctor has provided 1 answer

Dr. Rawhi Omar answered

No: Very little blood is usually taken for testing and is rapidly replaced by reserves in the spleen

Dr Gabor agreed

Answered 11/21/2018

3.3k views

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A member asked:

Is it dangerous for doctors to take so much blood for lab work? should i be worried about fainting or anything like that?

A doctor has provided 1 answer

Dr. Rawhi Omar answered

Dr Gabor agreed

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Questions?

I'm 43 yo with low libido for a while. Blood work shows testosterone @ 314 ng/dl (range is 292-867). Doc says is normal. But, since lab range is for huge age range i don't get how 314 is ok for 43 yo?