
Is P24 Antigen HIV Test Done At 40th Day Of Exposure Conclusive?

Question: P24 antigen hiv test done at 40day of exposure how reliable is it?
Brief Answer:
It is not very reliable if done on 40th day of exposure.
Detailed Answer:
Hello,
P24 antigen test can detect the P24 protein on average 10 to 14 days after infection with HIV.
One drawback of this test is that levels of the P24 protein peak at around three to four weeks after exposure to HIV and are usually not detectable after five to six weeks (and sometimes even earlier).
As your test is done on 40th day of exposure, it is not very reliable.
You can go for antibody test, if these tests are negative then there is nothing to be worried about. You may repeat the test after 3 months for confirmation.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
It is not very reliable if done on 40th day of exposure.
Detailed Answer:
Hello,
P24 antigen test can detect the P24 protein on average 10 to 14 days after infection with HIV.
One drawback of this test is that levels of the P24 protein peak at around three to four weeks after exposure to HIV and are usually not detectable after five to six weeks (and sometimes even earlier).
As your test is done on 40th day of exposure, it is not very reliable.
You can go for antibody test, if these tests are negative then there is nothing to be worried about. You may repeat the test after 3 months for confirmation.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Above answer was peer-reviewed by :
Dr. Bhagyalaxmi Nalaparaju


Thank you so much dr for your clear Answer. What I actually did is Ab/ag p24 test for hiv, can trust this at 40 days of exposure because it was negative.
Brief Answer:
Most likely you are safe.
Detailed Answer:
Hello,
Most likely you are safe but you should repeat the antibody test after 3 months due to variation in disease progression. Repeat test after 3 months will confirm you.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Most likely you are safe.
Detailed Answer:
Hello,
Most likely you are safe but you should repeat the antibody test after 3 months due to variation in disease progression. Repeat test after 3 months will confirm you.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Above answer was peer-reviewed by :
Dr. Bhagyalaxmi Nalaparaju


Thanks once more dr, am sorry for asking you again. I had a lot of symptoms after 8days of exposure beginning with sore throat, inflammation of the neck head and armpit and tiredness ,fatigue and headache but no fever. I also haddiarrhea for 5weeks and am still having it uptill now. My symptoms have lasted for 10 weeks now. My questions are
(1) can the symptoms of hiv last for 10weeks
(2) With all these symptoms in you own opinion how many percent chance do I have that this negative test at 40days will remain negative at 12weeks.
Please tell me the truth because i like how you answer questions.
(1) can the symptoms of hiv last for 10weeks
(2) With all these symptoms in you own opinion how many percent chance do I have that this negative test at 40days will remain negative at 12weeks.
Please tell me the truth because i like how you answer questions.
Brief Answer:
HIV is unlikely in your case.
Detailed Answer:
Hello
Sorry for replying late.
Presentation of initial symptoms of AIDS varies very much.
Only way to confirm HIV infection is through tests.
Most people who are infected with HIV experience a short,flu-like illness that occurs two to six weeks after infection.This is called as seroconversion illness.Symptoms usually last one to two weeks but it can be longer.
One main factor during flu like illness is fever.You don't have fever,this is in your favour.
Diarrhea is mainly found in chronic illness,this is also in your favour.
Most likely your symptoms are due to some other reasons.
In your case,symptoms are unlikely to persist for 10 weeks.However,as we discussed earlier,it varies with person to person.
You have undergone fourth generation tests and it includes both antigen and antibody tests.I am almost fully sure that you are not suffering from HIV illness.
However,you need follow up test after 3 months for confirmation.
I am sure your tests will be negative even after 12 weeks.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
HIV is unlikely in your case.
Detailed Answer:
Hello
Sorry for replying late.
Presentation of initial symptoms of AIDS varies very much.
Only way to confirm HIV infection is through tests.
Most people who are infected with HIV experience a short,flu-like illness that occurs two to six weeks after infection.This is called as seroconversion illness.Symptoms usually last one to two weeks but it can be longer.
One main factor during flu like illness is fever.You don't have fever,this is in your favour.
Diarrhea is mainly found in chronic illness,this is also in your favour.
Most likely your symptoms are due to some other reasons.
In your case,symptoms are unlikely to persist for 10 weeks.However,as we discussed earlier,it varies with person to person.
You have undergone fourth generation tests and it includes both antigen and antibody tests.I am almost fully sure that you are not suffering from HIV illness.
However,you need follow up test after 3 months for confirmation.
I am sure your tests will be negative even after 12 weeks.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Thank u so much dr, Am very very happy and satisfied with your answer.
Brief Answer:
Thanks for your comments.
Detailed Answer:
Hello
Thanks for your comments.
Get well soon.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Thanks for your comments.
Detailed Answer:
Hello
Thanks for your comments.
Get well soon.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Happy New year dr.
Brief Answer:
Happy new year to you also.
Detailed Answer:
Hello
Happy new year to you also.
Get well soon.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Happy new year to you also.
Detailed Answer:
Hello
Happy new year to you also.
Get well soon.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Good day dr,
Am sorry to disturb you again, sniffing of drug (coke) 2months before hiv test can it delay the appearance of antibodies. Am sorry to mention this here, am not a drug user but I just want to know how true it is in other to increase my knowledge. Thanks.
Am sorry to disturb you again, sniffing of drug (coke) 2months before hiv test can it delay the appearance of antibodies. Am sorry to mention this here, am not a drug user but I just want to know how true it is in other to increase my knowledge. Thanks.
Brief Answer:
No,There is no such interaction.
Detailed Answer:
Hello
No,There is no such interaction.Sniffing can't affect the production of HIV antibodies.
Don't worry about this.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
No,There is no such interaction.
Detailed Answer:
Hello
No,There is no such interaction.Sniffing can't affect the production of HIV antibodies.
Don't worry about this.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


Thank you very much for your answers.
I have gone to another Hiv test yesterday which is exactly 12weeks of exposure.
I will get the result on the 13th of January.
But my problem is that am still having serious diarrhea weakness of the joints, pains in the neck and feeling of unwell. I have gone to general test but dr said that he cannot prescribe any medicine for me because no sickness have been found but I am dieing gradually very day. Please Dr is there any medicine you know that can be of help?
I have gone to another Hiv test yesterday which is exactly 12weeks of exposure.
I will get the result on the 13th of January.
But my problem is that am still having serious diarrhea weakness of the joints, pains in the neck and feeling of unwell. I have gone to general test but dr said that he cannot prescribe any medicine for me because no sickness have been found but I am dieing gradually very day. Please Dr is there any medicine you know that can be of help?
Brief Answer:
We should wait for the results.
Detailed Answer:
Hello
We should wait patiently till results come.We should expect good results.
Diarrhea may be due to many reasons.This need proper evaluation.It may be due to anxiety.Empirically you take antimotility drugs for short duration like tablet loperamide.
Colonoscopy can be done for better evaluation.
For pain you can take NSAIDS like tablet Piroxicam SOS.
Please let me know your final reports.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
We should wait for the results.
Detailed Answer:
Hello
We should wait patiently till results come.We should expect good results.
Diarrhea may be due to many reasons.This need proper evaluation.It may be due to anxiety.Empirically you take antimotility drugs for short duration like tablet loperamide.
Colonoscopy can be done for better evaluation.
For pain you can take NSAIDS like tablet Piroxicam SOS.
Please let me know your final reports.
Get well soon.
Hope I have answered your question.
Further queries are most welcome.
Take Care
Dr.Indu XXXXXXX
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. Vaishalee Punj

Answered by

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