Hepatitis C can be determined by hepatitis C virus RNA test, anti-HCV test and other methods. 1. Hepatitis C virus RNA test: it is a commonly used method to determine hepatitis C. The main purpose is to detect the presence of hepatitis C virus in the blood, which is highly sensitive and can detect the presence of the virus within 2 weeks after infection. 2. Anti-HCV test: for some high-risk groups of hepatitis C virus infection with weakness and other manifestations or people with unexplained transaminase elevation, it is necessary to test the anti-HCV in serum, and if the anti-HCV is positive, then it is necessary to further test the serum or plasma HCV to make clear whether hepatitis C exists. To determine whether you have hepatitis C, you should consult a doctor in time, under the guidance of the doctor to carry out tests to determine clearly, once diagnosed, you should actively cooperate with the doctor to take the appropriate treatment methods for treatment.