Hepatitis B Surface Antibody
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.
- 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.
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 b surface antibody 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
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.