LabInformationLab tests, explained

Hepatitis A Immunity Test in California

Below is a plain-language overview of the hepatitis a immunity test. The Hepatitis A Immunity Test checks whether you have antibodies that protect against hepatitis A, a liver infection caused by the hepatitis A virus. It is often ordered to confirm immunity from a past infection or vaccination, or to see if vaccination is needed. Across California, part of Pacific, the hepatitis a immunity test can be ordered directly and collected at a certified site — no referral required.

Sample type
blood
Category
Sexual Health
Turnaround
1-3 business days
Price
$144
Referral
Not required

The Hepatitis A Immunity Test checks whether you have antibodies that protect against hepatitis A, a liver infection caused by the hepatitis A virus. It is often ordered to confirm immunity from a past infection or vaccination, or to see if vaccination is needed.

What it measures

  • Total Hepatitis A Antibodies — Detects both IgM and IgG antibodies against hepatitis A virus.
  • IgG Antibodies — Indicates past infection or vaccination; suggests long-term protection.
  • IgM Antibodies — Suggests recent infection; not usually present after vaccination.

Who it is for

This test may be ordered for people at higher risk of hepatitis A, those with liver disease, travelers to areas where the virus is common, or anyone wanting to check their immunity status.

Preparation

No fasting or special preparation is needed for this blood test. You can eat and drink normally before your appointment.

Results and what they mean

Results are typically reported as positive (immune) or negative (not immune), sometimes with a numerical value. A positive result generally means you have antibodies that protect against hepatitis A, while a negative result means you may need vaccination. A clinician interprets your results in the context of your health history; this information is not medical advice.

Requesting the Hepatitis A Immunity Test in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. With coastal metros, inland towns, and rural counties with very different access to testing, it pays to schedule your collection in advance.

Frequently asked questions

Do I need to fast for this test?

No, fasting is not required. You can eat and drink as usual before the blood draw.

What does a positive result mean?

A positive result usually means you have antibodies against hepatitis A, which can come from a past infection or vaccination. It suggests you are likely protected.

What if my result is negative?

A negative result means you do not have detectable antibodies. Your clinician can discuss whether vaccination is recommended for you.

How long does it take to get results?

Results are typically available within 1 to 3 business days after your blood sample is collected.

Hepatitis A Immunity Test by city in California

All testing in California →   Full Hepatitis A Immunity Test guide →