HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

question-icon

What Is The Accuracy Of P24 Test? Had Protected Sex Relationship With Multiple Women. Chances?

default
Posted on Sat, 16 Jun 2012
Question: hi doctor i want to ask about accuracy of p24 (combo) test it is negative in day 40 from protected sex relation with 3 womens and also i have oral sex ?
i have also negative antibody test in day 39
why i wait to 3 months as i am very very depressed and i want to be comfort
default
Follow up: Dr. Rohit Batra (4 hours later)
what about my next test is it better to take another p24 combo test or elisa antibody test in day 60?
doctor
Answered by Dr. Rohit Batra (18 hours later)
Hi,
Thanks for posting your query!

P24 is an antigen test and usually gets positive within 7 days of unprotected high risk behavior.
If the antibody test is negative at day 40, it can't be a definitive test as the antibodies are not detectable between 3 weeks to 3 months. This happens as the antigens start combining with the antibodies.
A repeat antibody test needs to be carried out at an interval of 3 months after exposure as it's at that time that antibodies get excessive and are detectable.

So I would advise you to wait for 3 months and get an antibody test done. There is no need to get the combo test repeated.

Regards

Dr.Rohit Batra
Note: Get personalized answers to your HIV related queries You can choose to talk face to face with your doctor. Book a Video Call now.

Above answer was peer-reviewed by : Dr. Aparna Kohli
doctor
Answered by
Dr.
Dr. Rohit Batra

Dermatologist

Practicing since :2003

Answered : 304 Questions

premium_optimized

The User accepted the expert's answer

Share on

Get personalised answers from verified doctor in minutes across 80+ specialties

159 Doctors Online

By proceeding, I accept the Terms and Conditions

HCM Blog Instant Access to Doctors
HCM Blog Questions Answered
HCM Blog Satisfaction
What Is The Accuracy Of P24 Test? Had Protected Sex Relationship With Multiple Women. Chances?

what about my next test is it better to take another p24 combo test or elisa antibody test in day 60?