How long you have to have hepatitis c before it will be seen on an std screen?

Hepatitis c: Ordinarily about six to nine weeks although it may take up to 6 months.

Newer tests < 3 mo.: Hepatitis c RNA pcr test traditionally used as a viral count after diagnosis. Useful in situations where recent significant risk of infection exists (recent needle stick, blood transfusion, idu). Useful in cases in which the individual suffers from extreme levels of anxiety, and does not wish to wait the traditional 3 month window period. Results within 3-7 days.