HCV GENOTYPING TEST

HCV Genotyping Test

What it is

The HCV Genotyping Test identifies the specific genetic strain (genotype) of the Hepatitis C virus present in a patient’s blood. Hepatitis C virus has multiple genotypes (1 to 6) and several subtypes. Since treatment regimens, drug choices, and duration vary depending on genotype, this test plays a crucial role in personalized patient care and therapy planning.

Uses

This test is used to:

• Determine the genotype of HCV infection before starting antiviral therapy.
• Guide selection of the most effective treatment plan and medication.
• Predict treatment response, as some genotypes respond better to certain drugs.
• Assist in prognosis, since disease progression rates differ by genotype.

Symptoms That May Lead to the Test

HCV genotyping is not a primary diagnostic test but is performed after confirming active infection through HCV RNA tests. Doctors may recommend genotyping if you have ongoing infection symptoms such as chronic fatigue, jaundice, nausea, abdominal swelling, or abnormal liver function tests, and require treatment planning.

Abnormal Results

Detected Genotype: Identifies which HCV strain (e.g., Genotype 1, 2, 3, 4, 5, or 6) is present. This directly impacts drug selection and treatment duration.

No Genotype Detected: Suggests no active HCV infection or viral load too low for genotyping. Repeat testing or additional RNA quantification may be necessary.

For example, Genotype 1 is common in the U.S. and may require longer treatment, while Genotype 3 is associated with higher risk of liver disease progression.

Risks

The test requires a blood sample. Risks are minimal, including mild pain, bruising, or dizziness at the puncture site, which resolve quickly without complications.