If I got tested 5 weeks after possible exposure, and my results were negative, what are my chances of being in the clear, what is the percentage of this results being accurate?
Hello and Thank You for using the AIDS Vancouver Helpline as your source of AIDS/HIV related information.
The most common types of HIV testing available look for the HIV antibodies in the blood, and 95% of infections are detectable within 4-6 weeks. The test itself has a 99.8% accuracy rate after 12 weeks and there are no published accuracy percentages of test types when the test is taken before the end of a given “window period” for testing. Test results at 5 weeks can be considered quite accurate but, because there is a very small chance of getting a false result, international guidelines recommend re-testing at 12 weeks (3 months) for conclusive and definitive results. I hope this helped answer your question.
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