Skip to content

Serum Viral Load (e.g., Hepatitis B or C Virus RNA)

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

This test measures the amount of viral genetic material (RNA) in your blood. It helps track how your hepatitis B or C infection is progressing or responding to treatment.

Quick summary

["This test helps monitor viral activity and guide treatment decisions."]

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

Key facts at a glance

LOINC
7712-3
Short code
S atrovirens IgE Qn
Synonyms
S atrovirens IgE Qn
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 chronic hepatitis B or C, or if you’re being evaluated for these infections. It’s also used during treatment to check if the virus is decreasing or if your body is clearing it.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm, and a blood sample will be drawn. The process takes a few minutes.

What the Results Mean

Results are typically reported in viral copies per milliliter (copies/mL). Very high levels may indicate active infection, while very low or undetectable levels suggest the virus is under control.

Common Causes of Abnormal Results

High levels may mean the virus is actively replicating, possibly due to untreated infection or lack of adherence to treatment. Low or undetectable levels often mean the virus is suppressed or eliminated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Viral RNA Level (Serum)

Frequently asked questions

What does a positive result mean?
A positive result means the virus is present in your blood at detectable levels. This doesn’t necessarily mean you’re sick right now, but it confirms the infection and guides next steps, such as starting treatment.
Can diet or supplements affect this test?
No, diet or supplements typically don’t interfere with viral RNA testing. However, avoid alcohol and certain medications (like acetaminophen in high doses) before testing if your provider advises it.
How often should I get this test?
Your provider will determine the frequency based on your condition. For chronic hepatitis, tests may be done every few months during treatment to monitor progress.
  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