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NAT tests

Is a nucliec acid based test 100% conclusive after 3 weeks?
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A NAT is the same as a PCR-RNA test and no it is not conclusive after 3 weeks.
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You do not need a PCR test for unprotected sex with a sex worker. Your risk is too low to justify it. It is very expensive and you are much more likely to receive a false positive result than the antibody tests.
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