Hello Doctor, I tested negative on a 45 day HIV combo antigen and antibody test, and also negative on a 67 day HIV antibody test. Is it still possible for the test to turn positive after 90 days? Please advise.

Answered by 1 Apollo Doctors

Dr Hema Pratima

General Practitioner

MBBS
Fellowship in Diabetes Mellitus
9+ Yrs

Consult Now

A combo antigen and antibody test at 45 days and antibody test at 67 days are highly accurate. If both are negative, the risk is nearly ruled out. For full peace of mind, one last test at 90 days is conclusive.

Dr. Hema Suggests...

Take a HIV 1 AND 2 ANTIBODIES Test

Book HIV 1 AND 2 ANTIBODIES Test

Answered 15/09/2025

More HIV DUO (ANTIGEN AND ANTIBODY) Health Queries

View all

I went to a pathology lab today to get a blood test. When I went in, the staff already had the injection in her hand. Do clinics use used needles and syringes? Should I be worried about the risk of HIV, especially since it is a small pathology and not a big hospital?

Answered by Apollo Doctors

I had unprotected sex with an unknown partner 65 days ago. Today, I did an HIV 1 and 2 antibody test, which came back negative. I do not have any symptoms related to HIV, but I have had allergic throat irritation and acne problems for the past year. Am I safe from HIV, and is this test conclusive at this stage?

Answered by Apollo Doctors

Is the HIV RNA test at 35 days conclusive?

Answered by Apollo Doctors

Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.