Is HIV Antibody Test Done After 40 Days Of Exposure Conclusive?

Posted on Sat, 29 Nov 2014

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sat, 29 Nov 2014 Answered on

Tue, 23 Dec 2014 Last reviewed on

Question : I did antibody anti hiv1 and hiv2 and ag p24 test after 40 days of exposure and it came out negative and later the infectious units call me again for another test. my question this negative test at 40days not reliable.

Answered by Dr. Bharatesh Devendra Basti (54 minutes later)

Brief Answer:
Not conclusive at 40 days.

Detailed Answer:
Hi
Thank you for query.I am Dr Bharatesh D Basti answering your query.
The duo test usually measures antibody to HIV1 &2 and p24 antigen.It is good that it is negative.
Antibodies may take 2 weeks to 3 months to be formed.
So they may repeat the test again after 3 months.After 3 months it will be conclusive.
You can get back for any clarification.
Thank you
Dr Bharatesh D Basti
Dermatologist and venereologist

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar