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Herpes Simplex Virus Antibody, Total (Serum/Plasma)

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

This test measures the presence of antibodies against herpes simplex virus (HSV), which helps identify past or current infection with either HSV-1 or HSV-2.

Quick summary

["This test checks for immunity or past exposure to herpes simplex virus."]

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

Key facts at a glance

LOINC
9454-0
Short code
HSV Ab Titr CSF CF
Synonyms
HSV Ab Titr CSF CF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
comp-fix
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What This Test Measures

Herpes simplex virus (HSV) can cause infections like cold sores (HSV-1) or genital herpes (HSV-2). Antibodies are the body’s immune response to the virus. This test detects total antibodies (both HSV-1 and HSV-2) to determine if you’ve been exposed to either type.

Why It’s Done

Doctors may order this test if you have symptoms of HSV infection (e.g., sores, pain, or flu-like symptoms), if you’re pregnant and at risk of transmitting HSV to your baby, or if you’re unsure about past exposure.

Sample Collection

A small amount of blood is drawn from a vein in your arm. The blood is processed into serum or plasma for testing.

What to Expect

You may feel slight discomfort or bruising at the injection site. Most people recover quickly, and the test itself takes only a few minutes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results indicate past exposure to HSV, meaning your immune system has recognized and fought the virus. However, this does not guarantee you are currently infected. Negative results suggest no detectable antibodies, which may mean you’ve never been exposed or the test was taken too early after exposure. This test is not used to diagnose active infection but can help guide further evaluation or management.

Short name

HSV Antibody Total

Frequently asked questions

What does a positive result mean?
A positive result means your body has produced antibodies against HSV, which could indicate past infection with either HSV-1 or HSV-2. This does not confirm an active infection but may help assess risk or guide preventive measures.
Can this test be used to diagnose active herpes?
No, this test is not used to diagnose active herpes. It only detects antibodies, which are part of the immune response after infection. For diagnosing an active infection, your doctor may recommend additional tests or clinical evaluation.
How soon after exposure might I get a positive result?
Antibodies may take weeks to develop after exposure. Results can vary, and a negative test early after exposure may not be reliable. Follow-up testing or clinical assessment may be needed if you suspect recent infection.
  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