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Human Herpesvirus 7 (HHV-7) Immunoglobulin G Antibody, 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 and cytomegalovirus."]

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

Key facts at a glance

LOINC
43022-3
Short code
HHV7 IgM Titr Ser
Synonyms
HHV7 IgM Titr 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 or conditions linked to HHV-7 infection, such as persistent fatigue, fever, or immune system issues. It may also be used in research or monitoring for certain immune-related conditions.

What to Expect Before the Test

No special preparation is needed. You may have a blood sample drawn from a vein in your arm, similar to other blood tests. You might feel a slight pinch, but it usually doesn’t cause discomfort afterward.

What the Test Results Mean

Positive results indicate the presence of HHV-7 antibodies, suggesting past exposure or infection. Negative results mean no detectable antibodies at this time. Interpretation depends on clinical context and your symptoms.

Common Reasons for Testing

This test is less commonly used in routine care compared to others like HIV or CMV testing. It may be considered in specific cases, such as evaluating immune function in patients with chronic illnesses or investigating unexplained symptoms.

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 3 to 7 business days, depending on your lab’s processing time. Follow up with your healthcare provider to discuss the results and next steps.
What does a positive result mean?
A positive result means your immune system has produced antibodies against HHV-7, which may indicate past exposure or infection. However, this doesn’t confirm an active infection without additional testing or clinical correlation.
Can I have this test if I’m pregnant?
This test is generally considered safe during pregnancy, but your healthcare provider will weigh the potential benefits against any risks based on your specific situation. Always discuss with your provider before proceeding.
  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