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Human Herpesvirus 7 Immunoglobulin G (IgG) Antibody, Serum

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

This test measures your body’s immune response to Human Herpesvirus 7 (HHV-7), a virus that can cause infections. It detects antibodies (IgG) produced by your immune system in response to past or current exposure.

Quick summary

["This test helps assess your immune system’s reaction to HHV-7, which may be relevant in certain infections or immune-related conditions."]

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

Key facts at a glance

LOINC
109311-1
Short code
HHV7 IgM Msmt Ser
Synonyms
HHV7 IgM Msmt 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

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like fever, fatigue, or muscle pain that could be linked to HHV-7 infection. It may also be used in research or to monitor immune function in specific clinical scenarios.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample from a vein in your arm. The process is quick and typically painless. If you’re on blood-thinning medication or have a history of bleeding issues, let your provider know.

What the Test Results Mean

A positive result indicates the presence of IgG antibodies, suggesting past exposure to HHV-7. However, antibodies alone don’t confirm an active infection. Results may vary based on timing since exposure and individual immune response.

Common Reasons for Testing

This test is often used in research studies, to evaluate immune responses in certain conditions, or as part of broader diagnostic workups for unexplained infections or immune-related disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HHV-7 IgG Antibody

Frequently asked questions

How long does it take to get test results?
Results are usually available within 1 to 3 business days, depending on your lab’s processing schedule. Your healthcare provider will discuss the findings with you during your follow-up visit.
What does a positive or negative result mean?
A positive result means your body has produced IgG antibodies against HHV-7, suggesting you’ve likely been exposed to the virus at some point. A negative result means no detectable antibodies were found, but this doesn’t rule out past exposure or a very recent infection.
Can this test be used to diagnose an active HHV-7 infection?
No, this test alone cannot diagnose an active HHV-7 infection. Antibody levels can fluctuate, and active infection is typically confirmed through other diagnostic methods, such as viral culture or PCR testing for viral DNA.
  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