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How after the suspected hiv exposure is the pcr/dna blood

Customer Question
How long after the suspected...
How long after the suspected hiv exposure is the pcr/dna blood test conclusive?
Submitted: 6 years ago.Category: HIV and AIDS
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Answered in 26 minutes by:
8/8/2011
HIV and AIDS Expert: TheBugDoctor, Doctor (MD) replied 6 years ago
TheBugDoctor
TheBugDoctor, Doctor (MD)
Category: HIV and AIDS
Satisfied Customers: 1,753
Experience: I am a Board Certified Infectious Diseases physician with many years experience treating a broad range of infectious diseases.
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Hello-

After exposure, the HIV PCR may become positive within 8 -10 days at the earliest. Certainly by a couple weeks to a month a negative test is good evidence agianst HIV infection.

Good luck.

Always ask if you need clarification/more information.

If I have answered your question, please click the ACCEPT button so I can get credit for my work.

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TheBugDoctor
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Customer reply replied 6 years ago
Some say that the DNA needs a 90 day wait, do you feel that's overly cautious? Is there ant reason you can see that it might be a false negative after a 40 day wait?
HIV and AIDS Expert: TheBugDoctor, Doctor (MD) replied 6 years ago

No.

The current antibody test ( ELISA ) is generally positive by 1 month. But we do a follow up at 3 months to increase the sensitivity- although almost all that will be positive already are at 1 month.

The PCR is positive much earlier.

You are mixing up 2 different tests.

Always ask if you need clarification/more information.

If I have answered your question, please click the ACCEPT button so I can get credit for my work.

POSITIVE feedback & a BONUS are warmly appreciated.
Please note that answers are for information only, do not take the place of an IN PERSON assessment by your doctor,
and does not establish a patient-physician relationship.

TheBugDoctor
TheBugDoctor, Doctor (MD)
Category: HIV and AIDS
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Experience: I am a Board Certified Infectious Diseases physician with many years experience treating a broad range of infectious diseases.
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