Hepatitis A Antibody Test
Below is a plain-language overview of the hepatitis a antibody test. The hepatitis A antibody test is a blood test that checks whether you have antibodies against hepatitis A virus, which can indicate a past infection, a current infection, or vaccination. It is often ordered when someone has symptoms of liver inflammation or when a possible exposure to the virus needs to be checked.
- Sample type
- blood
- Category
- Sexual Health
- Turnaround
- 1-3 business days
- Price
- $24
- Referral
- Not required
The hepatitis A antibody test is a blood test that checks whether you have antibodies against hepatitis A virus, which can indicate a past infection, a current infection, or vaccination. It is often ordered when someone has symptoms of liver inflammation or when a possible exposure to the virus needs to be checked.
What it measures
- IgM antibodies — Usually appear early and suggest a recent or current infection.
- IgG antibodies — Usually appear later and can remain for life, showing past infection or vaccination.
- Total antibodies — A combined measurement that may be used for screening.
- Liver enzymes (if included) — May be checked alongside to see how the liver is working.
Who it is for
A doctor or other clinician typically orders this test when a person has hepatitis symptoms, known exposure, or risk factors, or when immunity from vaccination needs to be confirmed.
Preparation
No fasting or special preparation is usually required. Tell your clinician about any medications, supplements, or recent vaccinations.
Results and what they mean
Results are reported as positive, negative, or sometimes equivocal for each antibody type, and a clinician interprets them alongside your history and other tests. A positive IgM result can suggest recent infection, while a positive IgG result can suggest past infection or vaccination. This is general information only and is not medical advice; talk with a qualified clinician about your results.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the hepatitis a antibody test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast before this test?
No. Fasting is not usually needed for a hepatitis A antibody test.
Can this test tell if I am protected from hepatitis A?
A positive IgG result can suggest protection from past infection or vaccination, but only a clinician can interpret what it means for you.
How long do results take?
Results are typically available within 1 to 3 business days.
Is the test confidential?
Yes, your test results are handled as private medical information.