Hepatitis B Test

Overview

Hepatitis B is a liver infection caused by the hepatitis B virus (HBV). Testing includes multiple markers to determine immunity from vaccination, acute infection, or chronic infection. The vaccine has been routine since 1991, but many adults remain unvaccinated.

Who Should Get Tested?

All pregnant women, people from regions with high HBV prevalence, injection drug users, men who have sex with men, HIV-positive individuals, and anyone requesting STI screening.

What to Expect

Standard blood draw. Multiple markers may be tested to determine immunity status vs active infection.

How to Prepare

No special preparation. Blood draw for surface antigen and surface antibody testing.

Window Period (When to Test)

Earliest Detection: 21 days post-exposure

Optimal Testing: 60 days post-exposure

Conclusive Results: 90 days post-exposure

HBsAg detectable 1-9 weeks post-exposure; antibodies take 2-12 weeks to develop.

Symptoms

In Men

Often asymptomatic; possible jaundice, fatigue, abdominal pain, nausea, dark urine

In Women

Same as male - often asymptomatic, especially in chronic cases

Possible Complications

Cirrhosis, liver cancer, liver failure, chronic infection (5-10% of adults)

Treatment

Acute: supportive care. Chronic: antivirals (tenofovir, entecavir) suppress virus; vaccine prevents infection

Retesting Recommendations

If immune, no retest needed. If susceptible, get vaccinated. If infected, regular monitoring required

Frequently Asked Questions

What does it mean if I have immunity to hepatitis B?

Positive anti-HBs indicates vaccine-induced immunity or past infection recovery. You are protected against future HBV infection.

Is there a cure for hepatitis B?

Acute hepatitis B often resolves on its own. Chronic hepatitis B has no cure but is manageable with antiviral medications that suppress the virus.

Should I get vaccinated for hepatitis B?

Yes, if you're not already immune. The vaccine is safe, effective, and recommended for all adults up to age 59, and those 60+ with risk factors.

How is hepatitis B transmitted?

Through blood, semen, vaginal fluids, and from mother to baby during birth. It is 50-100 times more infectious than HIV.

Cost & Pricing

The Hepatitis B Test typically costs between $49 and $89 when ordered directly through a certified lab. Prices may vary by location. Many testing centers accept HSA/FSA cards.

Learn More: Visit the CDC Hepatitis B Test Information for additional details from the Centers for Disease Control and Prevention.

Medical Disclaimer: This information is for educational purposes only and should not replace professional medical advice. Always consult with a healthcare provider for diagnosis and treatment.