Regardless of the type of HCV, they all cause the same disease -- hepatitis
C. In the United States, about 57% of people with hepatitis
C have genotype 1a, which is the most common type. Genotype 1b is in about 17% of people. Genotypes 2 and 3 are the next most common.
It is certainly possible to be tested to find out which genotype you have, and it's actually a good idea to find out because different types best respond to different treatment.