- Male
- 31 Years
- 22/01/2025
Hey, I've got a question about the P24 antigen antibody test. If I take it a month after possible exposure, will the results be conclusive for HIV, or should I consider getting another type of test too? I'm anxious to know how accurate it really is at that point.
Answered by 1 Apollo Doctors
The P24 antigen-antibody duo test is highly accurate when done after one month of potential exposure, as it detects both the HIV virus and antibodies. However, for a conclusive result, it's recommended to confirm with a follow-up test, such as the HIV RNA PCR test or another antibody test, at 3 months post-exposure.
Dr. Shubham Suggests...
Consult a Infectious Disease specialist
Answered 04/07/2025
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Understanding the P24 Antigen Antibody Test
- The P24 antigen antibody test detects HIV antigens and antibodies, indicating early infection.
- It differs from other tests by identifying the virus sooner than antibody-only tests.
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Timing and Accuracy of the Test at One Month Post-Exposure
- The P24 test is typically accurate from 2-4 weeks post-exposure.
- At one month, it is generally reliable, but not definitive for all cases.
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Recommendations for Additional Testing
- Follow-up testing is advised to confirm results.
- Consider a nucleic acid test (NAT) or a fourth-generation test for comprehensive results.
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Consulting Healthcare Professionals
- Discuss results and timing with a healthcare provider for personalized advice.
- They can guide you on next steps based on your risk factors and test outcomes.
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Emotional Support and Confidentiality
- Seek support and maintain confidentiality during testing and follow-up.
- Professional guidance can provide reassurance and clarity.
Recommended next steps
Consult a Infectious Disease specialist or Consult a Sexologist
Answered 20/08/2025
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More Infectious Disease Health Queries
View allI'm really worried about my syphilis tests. About two months ago, my TPHA level was 1320 and RPR was 12. My doctor put me on doxycycline, 100 mg twice a day for 21 days. After finishing the treatment, I tested again and my TPHA had increased to 1640, with the RPR still at 12. They then gave me a penicillin injection, 2.4 mu, and told me to get tested after another two weeks. This time, my results were TPHA 1640 again, but RPR went up to 14. I even did a test at a different lab and the TPHA was 12560 there. I'm scared and not sure what's going on. Can you help me understand these results?
Your test results indicate a persistent syphilis infection, and the treatment outcomes are concerning; the increasing RPR titers (1:2 to 1:4) and varying TPHA results (1:320 to 1:640 to 1:2560) suggest that the infection may not be responding to the treatments administered; consult a specialist,
Answered by 1 Apollo Doctors
What are the stages of infection?
The five stages of infection include the incubation, prodromal, illness, decline, and convalescence periods.
Answered by 1 Apollo Doctors
I'm really concerned about finding reliable HIV testing methods. I've read about the 4th generation HIV 12 Antibodies and p24 Antigen test with a shorter window period of around four weeks after exposure. I live in Chennai and have tried to locate a lab or medical center that offers this test using the CMIA method but haven't had any luck so far. Do you have any suggestions on where I might find this test available in Chennai?
The 4th generation HIV 1 & 2 Ab and p24 Ag test by CMIA method is indeed a latest test for HIV testing with a short window period of about 4 weeks from exposure. Unfortunately, I couldn't find specific labs or medical centers in Chennai that offer this test. However, I recommend searching online for "4th generation HIV test in Chennai" or "CMIA method HIV test in Chennai" to find relevant options. You can also check with local hospitals or pathology labs to inquire about the availability of this test.
Answered by 1 Apollo Doctors
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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.