cough-cold-icon
21 th day antigen test
As per guidline for 4th generation 45 day final test to be done but it is also said that if some one exposure to infection it would detect 14 to 21 days ,some says 11 to 14 days, some say 18 days, if 21 days is non detection than how many chances that at 45 days also it will come non detection.. As per your knowledge... Because p24 detection is early that's why this test has been introduced to detect early...so how much accuracy at 21 day.
44 Views v

Answers (11)

20000+ health queries resolved in last month
Care AI Shimmer
90 percent chances Kindly consult to discuss further treatment plan.
Answered
Flag this Answer
Flag this answer
1/1 people found this helpful
Was this answer helpful?

Didn't find the answer you are looking for?

Talk to experienced doctor online and get your health questions answered in just 5 minutes.

doctor profile image doctor profile image doctor profile image doctor profile image +188
Consult with a doctor
Online now
The 4th gen HIV test detects both p24 antigen and antibodies, so it does pick up infection earlier than older tests. At 21 days it has about 95% sensitivity which is quite good, but it's not fully conclusive. If your 21-day result is negative, that's reassuring but the 45-day test is still needed to confirm. A negative at 45 days is considered conclusive as per standard guidelines. So do get that final test done for complete peace of mind.
Next Steps
Feel free to consult me on Practo for proper guidance and to discuss your test results in detail.
Answered
Flag this Answer
Flag this answer
1/1 people found this helpful
Was this answer helpful?
95% accurate if negative 👍 45 days gives even higher confidence.
Answered
Flag this Answer
Flag this answer
Let others know if this answer was helpful
Was this answer helpful?
If not detected at 45 days, means it is negative. Small variations can occur in  results  after early testing, I.e from 11 to 14 to 18 days. But not before that.
Answered
Flag this Answer
Flag this answer
2/2 people found this helpful
Was this answer helpful?
Get yourself evaluated and full body check up dobe .
Answered
Flag this Answer
Flag this answer
1/1 people found this helpful
Was this answer helpful?
99 % chances that result will be non reactive
Answered
Flag this Answer
Flag this answer
2/2 people found this helpful
Was this answer helpful?
Need a few more details please consult for further evaluation and treatment
Answered
Flag this Answer
Flag this answer
Let others know if this answer was helpful
Was this answer helpful?
Need few more details for further evaluation. Kindly consult.
Answered
Flag this Answer
Flag this answer
Let others know if this answer was helpful
Was this answer helpful?
Can help you, kindly consult and provide detailed history for proper diagnosis and further management
Answered
Flag this Answer
Flag this answer
1/1 people found this helpful
Was this answer helpful?
Avoid fried and spicy food Water intake more Do connect and consult
Answered
Flag this Answer
Flag this answer
1/1 people found this helpful
Was this answer helpful?
70
Answered
Flag this Answer
Flag this answer
1/2 people found this helpful
Was this answer helpful?
Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.
Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.