Hepatitis C Virus Genotype and Subtype Detection by Nucleic Acid Amplification Probe
This test identifies the specific type (genotype) and subtype of the Hepatitis C Virus (HCV) in your blood, helping doctors determine the best treatment plan.
["Your HCV type and subtype help guide personalized treatment options and monitor response to therapy."]
Key facts at a glance
- LOINC
- 49607-5
- Short code
- HCV Gentyp Tiss NAA+probe
- Synonyms
- HCV Gentyp Tiss NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0.8
- Ref high
- 1.2
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 85610
- SNOMED
- 396252006
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters for Your Health
Hepatitis C is caused by the HCV virus, which can damage your liver over time. Knowing your HCV genotype and subtype helps healthcare providers choose the most effective antiviral medications and plan for long-term management.
How the Test Works
This test uses a specialized probe to detect and confirm the presence of HCV genetic material in your blood. It involves extracting viral RNA from a serum or plasma sample and amplifying it to identify specific genetic sequences unique to different HCV genotypes (1–6) and subtypes.
Sample Collection and Preparation
A blood sample is drawn from your arm, and the serum or plasma portion is tested. The lab processes the sample to isolate viral RNA, which is then analyzed using a molecular technique to detect HCV genotypes and subtypes.
What to Expect Before the Test
No special preparation is needed for this test. You may have a slight bruise or soreness at the injection site, but this usually resolves quickly. If you’re pregnant, have a weakened immune system, or are on certain medications, inform your doctor before testing.
Reference range
INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HCV Genotype/Subtype Test
Frequently asked questions
Your HCV genotype and subtype determine which antiviral medications will be most effective. For example, genotype 1 often responds differently to genotype 3 treatments. This information also helps monitor treatment success and adjust care as needed.
How long will results take?
Can I get this test if I’ve never been tested for HCV before?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy