A 33-year-old male asked:
What is the window period for modern day hiv 4th generation tests. many hiv specialists consider this conclusive at 28 days.? and cdc says 3 months?
1 doctor answer • 1 doctor weighed in
Infectious Disease 54 years experience
Concensus is 4 weeks: Both biological principles of the test and expert opinion favor 28 days. Few if any HIV experts report ever having a patient with new HIV who didn't have a positive 4th generation test by 4 weeks. The main exception may be when post exposure prophylaxis with anti-HIV drugs is given but doesn't work. Even then, it's probably rare. Many official agencies take conservative stances and always have.
1.7k viewsAnswered >2 years ago
Last updated Nov 21, 2020
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