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Quantitative Antibody Probe for Hepatitis E Virus (HEV) IgG

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

This test checks for antibodies to the Hepatitis E virus, which your immune system makes in response to past infection. It helps determine if you’ve been exposed to HEV.

Quick summary

["HEV IgG antibodies indicate past infection, not current illness."]

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

Key facts at a glance

LOINC
69577-5
Short code
HEV RNA Bld Ql NAA+probe
Synonyms
HEV RNA Bld Ql NAA+probe
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What This Test Measures

This test detects specific antibodies (IgG) produced by your immune system after exposure to the Hepatitis E virus. Unlike acute HEV infections, which are usually short-lived, these antibodies remain in your blood for years, marking past infection. The test uses a specialized probe to quantify antibody levels.

Why It’s Done

Doctors may order this test if you’ve traveled to areas with high HEV risk, have unexplained liver issues, or are in a group at higher risk (e.g., travelers, pregnant women, or those with weakened immune systems). It helps rule out past HEV infection before ruling out other causes.

How the Test Works

A small blood sample is drawn and analyzed using a sensitive immunoassay method. The probe detects IgG antibodies specific to HEV, providing a precise measurement of your immune response to the virus.

What to Expect Before the Test

No special preparation is needed. Wear comfortable clothing and bring a photo ID. If you’re pregnant, have a chronic liver condition, or take blood thinners, let your doctor know before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HEV IgG Antibody Test

Frequently asked questions

What does a positive result mean?
A positive result means your body has likely been exposed to Hepatitis E virus in the past, and your immune system produced antibodies to fight it. This doesn’t mean you’re currently infected, but it may raise concerns about liver health during the acute phase or in high-risk situations.
Can I get HEV again if my test is positive?
Yes, you can become infected again with HEV, even if you’ve had antibodies before. This virus can reappear, especially in areas with poor sanitation or after traveling to high-risk regions. Your immune system may not fully protect you from reinfection.
Does this test replace an acute HEV test?
No, this test only detects past infection (IgG antibodies). For diagnosing current HEV infection, your doctor may order an acute-phase test (like HEV RNA detection) to check for active virus in your blood.
  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