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How long after being infected will an HIV 1 RNA PCR test show a positive result?

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Posted on Fri, 22 May 2015
Question: When to take the hiv rna pcr test ?
sir i had a unprotected sexual intercourse with prostitute on 14 april 2015.now i am getting paranoid of getting hiv infection .i am planning to go for a hiv 1 rna pcr qualitative test and hiv duo test but i do not know after what time period it will become coclusive,plz sir help .
doctor
Answered by Dr. S. Murugan (6 hours later)
Brief Answer:
RNA PCR is conclusive by 4 weeks. HIV duo conclusive by 12 weeks.

Detailed Answer:
Hi,
Welcome to HCM.
Thanks for posting your query.

HIV 1 RNA PCR test will be having a conclusive result 4 weeks after the high risk contact to rule out HIV 1 infection. HIV DUO test will be conclusive by 90 days to rule out both HIV 1 and 2.
All the contact are not necessarily infectious. All the sex workers are not necessarily HIV positive. So not to worry much. Safe sex always is better.
Dr S.Murugan
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. S. Murugan (8 hours later)
Sir I am taking methotrexate,hcqs,paracetamol,lornox,ocid ors for my arthritis,does this will affect the result of rna pcr test.
doctor
Answered by Dr. S. Murugan (8 minutes later)
Brief Answer:
RNA PCR test would not be affected by these drugs.

Detailed Answer:
Hi,
Welcome back.

I already noticed these drugs from your medical history.
These drugs would not affect anyway with the HIV RNA PCR Qualitative test. There may be a possibility of delay in antibody formation and the extension of window period for antibody based tests like ELISA/Rapid test, Western BLOT test etc.
So you can take up RNA PCR Qualitative test 4 weeks after the high risk contact.
DR S.Murugan
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. S. Murugan (3 hours later)
Thank you sir
doctor
Answered by Dr. S. Murugan (2 hours later)
Brief Answer:
You are most welcome.

Detailed Answer:
HI,
You are welcome.
Dr S XXXXXXX
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. S. Murugan

HIV AIDS Specialist

Practicing since :1974

Answered : 2980 Questions

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How long after being infected will an HIV 1 RNA PCR test show a positive result?

Brief Answer: RNA PCR is conclusive by 4 weeks. HIV duo conclusive by 12 weeks. Detailed Answer: Hi, Welcome to HCM. Thanks for posting your query. HIV 1 RNA PCR test will be having a conclusive result 4 weeks after the high risk contact to rule out HIV 1 infection. HIV DUO test will be conclusive by 90 days to rule out both HIV 1 and 2. All the contact are not necessarily infectious. All the sex workers are not necessarily HIV positive. So not to worry much. Safe sex always is better. Dr S.Murugan