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Dr. Arun Phophalia
Dr. Arun Phophalia, Doctor
Category: Medical
Satisfied Customers: 45669
Experience:  MBBS MS. Post doctoral fellowship in Sports Medicine. General surgeon and sports medicine specialist
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How accurate is P24 HIV testing after 30 days

This answer was rated:

How accurate is P24 HIV testing after 30 days

The accuracy of the p24 test after 30 days is around 98%.

Customer: replied 2 days ago.
Hi thank you.

My ex partner dated someone 6 years ago who was HIV positive

He advised that he doesn’t have it and I asked him to test which he did.

He tested on 15th December 19 finger prick and blood sample from vein.

Both negative

I last was intimate with him on 30th November 19,

I tested on 14th December and 30th December all negative,

I tested via p24 testing.

My last test was 30 days after we were last intimate.

Can I safely say that my results are conclusive.

He’s test would have picked up any antibodies if present right ?

Can you still catch the virus if there is no ejaculation ?

I was on contraceptives from 14th November and started having unprotected sex then including ejaculation. So the tests I had would have picked up anything from then right ?

Yes, your results are conclusive and with he being negative there is no worry. He tests would have picked antibodies.

The virus may be rarely transmitted without ejaculation.

The test would have picked up if there was anything.

Nothing to worry about.

Customer: replied 2 days ago.
Okay thank you.

So with ejaculation 6 times the virus could have been transmitted if it was present or are the risks low?

Also the time of my testing 30th December giving me 30 days since my last sexual encounter would be an accurate window of time to pick up early infection ?

How soon can p24 tests pick up infection?

Very welcome.

The p24 test picks up the infection within 21 days (sometimes earlier) of the incidence.

With your description, there is nothing to suggest a transmission.

 

Customer: replied 2 days ago.
And what is risk of transmission through sex when the person ejaculates

Per ejaculation gives you a risk of 1 in 300. It is low but is present.

Customer: replied 2 days ago.
So my test on 14th December and 30th December would have picked up anything from when we had unprotected sex from 14th November and plus I haven’t had a sexual encounter since 30th November so 29/30 days after my last encounter the P24 test would have definitely detected anything ?

How comes p24 tests are able to detect things so early ?
Customer: replied 2 days ago.
How comes with ejaculation the risk is low?

It tests for the virus directly.

With your tests, if there was the transmission, it would have been detected, as mentioned earlier.

 

Customer: replied 2 days ago.
Ok thank you.

I don’t need to test again then in. Few months?

Is it true that the virus can take time to come out in your body ?

The virus would have shown if it was there. This is why the tests are meant for. Since negative, it means there is no transmission.

There is no need for repeating the test in your scenario.

Wishing you a speedy resolution and all the very best in life.

 

 

 

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Stay blessed.

Dr. Arun Phophalia and 4 other Medical Specialists are ready to help you
Customer: replied 2 days ago.
Okay thank you

Very welcome.

Customer: replied 2 days ago.
It’s just I got very anxious when I heard
Customer: replied 2 days ago.
About this also people say that the virus takes 6 months at times to show up in people’s body

I can understand and percieve your anxiety.

Customer: replied 2 days ago.
Do you think I should speak to my GP about the anxiety I’m feeling ?

The test won’t show anything different in 6 months

You may seek help from your GP.