A member asked:

Hiv period window difference test cmia 27 day n 28 day? because i have been doing risky sex activities on the night of 23/10/19 and at 19/11/19 i have made a blood test using 4th hiv cmia test. the results are negetive. how much is the accu

A doctor has provided 1 answer
Dr. Hunter Handsfield answered

Specializes in Infectious Disease

HIV test: There is no significant difference between 27 and 28 days. Your negative result is 98-99% conclusive, so almost certainly you do not have HIV. But you need testing once more at 6 weeks for 100% certainty.

Answered 4/23/2023

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