There are two main indicators reflecting viral hepatitis C infection: hepatitis C antibody and hepatitis C virus quantification. The details are as follows: 1) both are positive, confirming the diagnosis of overt infection; 2) both are negative, indicating no hepatitis C virus infection; 3) positive antibody and negative viral load, indicating a previous infection or the virus has cleared after treatment; 4) negative antibody and positive viral load, indicating an acute infection or an overt infection in an immunocompromised person.