LabInformationLab tests, explained

Hepatitis B Surface Antibody in California

This page explains the hepatitis b surface antibody, what it measures, and how to arrange it. The hepatitis B surface antibody test checks whether your blood contains antibodies against the hepatitis B virus. It is often ordered to see if you are protected from hepatitis B, either from vaccination or a past infection. Across California, part of Pacific, the hepatitis b surface antibody 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
$49
Referral
Not required

The hepatitis B surface antibody test checks whether your blood contains antibodies against the hepatitis B virus. It is often ordered to see if you are protected from hepatitis B, either from vaccination or a past infection.

What it measures

  • Hepatitis B surface antibody (anti-HBs) — The main marker; a positive result usually means you are protected.
  • Hepatitis B surface antigen (HBsAg) — Sometimes tested together to check for current infection.
  • Hepatitis B core antibody (anti-HBc) — May be included to help tell apart vaccination from past infection.

Who it is for

A clinician may order this test if you are at risk for hepatitis B, before or after vaccination, or as part of a sexual health checkup.

Preparation

No fasting or special preparation is needed. Tell your clinician about any medications or health conditions.

Results and what they mean

Results are usually reported as positive, negative, or a number that shows your antibody level. A clinician interprets these results along with your history and other tests. This is general information, not medical advice.

Requesting the Hepatitis B Surface Antibody 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. Access across Pacific is uneven, so confirming a site ahead of time is worthwhile.

Frequently asked questions

Does a positive result mean I am immune?

A positive result generally means you have protection against hepatitis B, but your clinician will confirm what it means for you.

Can I get this test without a doctor's order?

Some labs offer it directly, but a clinician can help explain the result and whether more testing is needed.

How long does it take to get results?

Most results are ready within 1 to 3 business days.

Is this test confidential?

Yes, your test results are private and protected by health privacy laws.

Hepatitis B Surface Antibody by city in California

All testing in California →   Full Hepatitis B Surface Antibody guide →