What does it mean genotype polozhitelnyi and should be treated with the Hepatitis C?

Respond Tatyana Stepanova, a gastroenterologist, hepatologist What would decide whether to use antiviral therapy for hepatitis C is not sufficient to know the genotype of the virus. Need to take a blood test for: ALT, AST, GGT, bilirubin, thyroid hormones, viral load. Similar question: Vozhno whether to treat hepatitis C and that the need for this?