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If you do test positive for hepatitis C, your doctor or the specialist to whom you've been referred will probably order a genotyping blood test.
The hepatitis C virus has at least six distinct forms, or genotypes (labeled 1 through 6). In the United States, about 70% of patients have HCV genotype 1. In other parts of the world, other genotypes are more common. Genotype 1 is associated with a poorer response to treatment. Genotyping can help your doctor determine the appropriate hepatitis C treatment and how long treatment should be given.
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