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Human Herpesvirus 7 Immunoglobulin G Antibody (IgG) - Serum

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

This test measures the level of antibodies against Human Herpesvirus 7 (HHV-7) in your blood. Antibodies are proteins your immune system produces to help fight infections.

Quick summary

["This test helps assess your immune response to HHV-7, a virus related to other herpesviruses like HIV."]

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

Key facts at a glance

LOINC
34947-2
Short code
HHV7 IgG+IgM Pnl Ser
Synonyms
HHV7 IgG+IgM Pnl Ser
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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

What Does This Test Measure?

The test detects IgG antibodies specific to HHV-7. IgG antibodies are typically present after your body has been exposed to the virus, either through infection or vaccination (if applicable). This test is usually performed to evaluate past exposure or immune response rather than active infection.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms suggestive of HHV-7 infection (such as fever, fatigue, or rash) or if you have a weakened immune system. It can also be part of monitoring for certain conditions like HIV or other immune disorders.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The sample is then sent to a lab for testing using an immunoassay method to detect HHV-7 antibodies.

What Are Possible Results?

Results can be positive (indicating the presence of HHV-7 antibodies) or negative (indicating no detectable antibodies). A positive result suggests past exposure to HHV-7, but it does not confirm an active infection. Interpretation depends on clinical context and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HHV-7 IgG Antibody

Frequently asked questions

What Does a Positive or Negative Result Mean?
A positive result means your immune system has likely encountered HHV-7 before, but it does not confirm an active infection. This test is often used to assess immune status or monitor conditions where exposure to herpesviruses is relevant.
How Long Does It Take to Get Results?
Results are typically available within 1 to 3 business days, depending on lab processing times. Your healthcare provider will discuss the results with you during your follow-up visit.
Can This Test Be Used to Diagnose Active Infection?
No, this test alone cannot diagnose an active HHV-7 infection. It only indicates past exposure. If you suspect an active infection, your doctor may recommend additional tests or clinical evaluation.
  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