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Herpes Simplex Virus Type 2 (HSV-2) Quantitative Viral Load (Serum/Plasma)

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

This test measures the amount of the herpes simplex virus type 2 (HSV-2) in your blood. It helps determine how active the virus is in your body.

Quick summary

["Assessing HSV-2 activity to guide treatment decisions and monitor response to therapy."]

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

Key facts at a glance

LOINC
44490-1
Short code
HSV2 Anal Ql Cult
Synonyms
HSV2 Anal Ql Cult
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
CPT
86038
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 symptoms or a history of genital herpes caused by HSV-2. It can also be used to check if treatment is working or to evaluate viral shedding before or after treatment.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. The sample is sent to a lab for analysis.

What the Test Results Mean

Results are reported as the number of viral particles (copies) per milliliter of blood. Higher counts may indicate active infection, while lower counts suggest a reduced viral load. Interpretation depends on clinical context and your treatment plan.

Common Reasons for Testing

This test helps diagnose HSV-2 infection, assess viral activity, and monitor treatment effectiveness. It may also be used to guide decisions about antiviral therapy or to evaluate viral suppression before procedures like pregnancy or surgery.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

HSV-2 Viral Load

Frequently asked questions

How often do I need this test?
The frequency depends on your treatment plan and healthcare provider’s recommendations. For example, if you’re taking antiviral medication, your doctor may recommend testing every few months or as needed to monitor viral load.
Can I have false-positive or false-negative results?
Viral load tests are generally reliable, but occasional errors can occur due to lab errors or timing. If results are unclear, your provider may repeat the test or use other diagnostic methods.
What does a low viral load mean?
A low viral load typically means the virus is less active in your body, which can reduce the risk of transmission to others and may indicate that treatment is effective. However, it doesn’t mean the infection is cured—you may still carry the virus.
  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