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HIV tests and Full Blood Counts

Oct 30, 2003

hi doctor frascino,

i would just like to say that your work here is marvellous and REALLY helpful!

a couple of months back (in late May)i had unprotected oral and vaginal sex with someone (whose sexual history i know nothing about).i have only had sex with her once though..

as i recently had an operation done not too long ago(beginning sept.), i would like to know if a full blood count test that i had would determine if i had the hiv virus?

would there be something that the full blood count won't/can't detect (Lymphocytes-wise)?

Response from Dr. Frascino


A Complete Blood Count (CBC) cannot detect HIV infection. Only an HIV-specific blood test can do that. Unprotected sex does place you at some degree of risk for STD's, including HIV. Wait at least 3 months from the time of possible exposure to take an HIV test. Tests taken prior to 3 months are not considered definitive. Other STD screening, if you have any symptoms, can be done sooner.

Hope that helps clarify things for you.

Dr. Bob

how safe is protective sex
Dr. Bob---Boyfriend's mishap in the O.R. Pleeeaaassee help...

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