This test is crucial for individuals who have undergone a transplant and are monitoring Hepatitis C Virus (HCV) therapy or disease progression. It measures the amount of Hepatitis C virus in the blood, with a reportable range from 15 to 100,000,000 IU/mL (1.18 to 8.00 log IU/mL), helping doctors understand how well treatment is working or how the disease is progressing.