: How many mL of blood is typically drawn for a HIV blood test? I hope this isn't too broad or unanswerable a question but I'm wondering how many mL of blood serum are typically drawn out for a blood test for HIV. What's the

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HIV blood tests (for antigens and antibodies) are, at least where I practice, 4mL. However, if your doctor wants other blood tests she might add 1-2 vials of the same size. Depends on the organisation of the clinical lab and the tests draw.

I'm not fully familiar with how rapid HIV testing is done though. That might be slightly different.