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Herpes Simplex Virus Antibody, Serologic Test (Qualitative)

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

This blood test checks for antibodies to herpes simplex virus (HSV), which can help determine if you’ve ever been exposed to the virus or if you have an active infection.

Quick summary

["This test helps diagnose past or current HSV exposure and guides treatment decisions."]

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

Key facts at a glance

LOINC
5203-5
Short code
HSV Ab Ser LA-aCnc
Synonyms
HSV Ab Ser LA-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
la
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

Doctors may order this test if you have symptoms like sores, pain, or unusual rashes that could suggest HSV infection (e.g., genital herpes, cold sores). It’s also used to confirm past exposure if symptoms are unclear or if you’ve had close contact with someone who has HSV.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw blood. It usually takes a few minutes, and you may feel slight discomfort.

What the Test Results Mean

Positive results indicate the presence of HSV antibodies, suggesting past infection or immunity. Negative results mean no detectable antibodies, but this doesn’t always rule out current infection (antibodies may take time to develop).

Possible Results and Next Steps

If results are positive, your doctor may recommend further testing (like PCR) to check for active infection. If negative, they might reassess symptoms or retest later if exposure is suspected.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV Antibody Screen/Confirm

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
Can I have false positives or negatives?
Yes, rare false positives or negatives can occur, especially in early or late stages of infection. Your doctor will interpret results in context with your symptoms and medical history.
Does this test detect both HSV-1 and HSV-2?
This test detects antibodies to both types of HSV, but some labs may offer separate tests for HSV-1 or HSV-2 if needed for specific situations.
  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