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Serum or Plasma Viral RNA (e.g., Hepatitis C Virus) Quantitative Test

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of genetic material from the hepatitis C virus (HCV) in your blood. It helps doctors track how your infection is progressing and whether treatment is working.

Quick summary

["This test helps monitor hepatitis C virus levels to guide treatment decisions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
34704-7
Short code
HCV RNA SerPl NAA DL=50-aCnc
Synonyms
HCV RNA SerPl NAA DL=50-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar-detection-limit-iu-ml
CPT
86803
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 Is Done

Your healthcare provider may order this test if you have been diagnosed with hepatitis C or are at risk of infection. It’s often used to assess disease activity, monitor response to antiviral therapy, or check for viral resistance to treatments.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm or vein to draw a blood sample. The test is usually done in a lab setting and may take a few minutes.

What the Results Mean

Results are reported in viral RNA copies per milliliter (copies/mL) of blood. A higher number indicates a stronger virus presence, while a lower number suggests the virus is decreasing (e.g., due to treatment).

How This Test Helps Your Care

This test helps doctors determine if your hepatitis C treatment is effective, whether the virus is in remission, or if you need adjustments to your treatment plan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is critical for managing hepatitis C because it provides real-time data on viral load. Accurate monitoring helps prevent complications like liver damage and guides decisions about long-term care or therapy.

Short name

HCV RNA Level

Frequently asked questions

What does a ‘positive’ result mean?
A positive result means the hepatitis C virus is present in your blood at detectable levels, confirming an active infection. This does not necessarily mean you are contagious, but it indicates you need treatment.
How often should I get this test?
Your doctor will determine the frequency based on your treatment plan. Typically, tests may be done at the start of treatment, during follow-ups, and periodically afterward to check progress.
Can I still get hepatitis C if my test results are negative?
Yes, it’s possible to have a negative test result if the virus is very low or if you’ve been treated successfully. Always practice safe behaviors (e.g., avoiding needles, safe sex) to prevent reinfection.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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