"Absolutely fantastic service. I was very nervous about the blood draw, but Nurse Luciana was so professional and gentle. She made the whole process painless. Results came back via secure email in 24 hours. Best clinic in South Kensington."
About This Test
The Hepatitis B Surface Antigen (HBsAg) test is the primary screening test for active Hepatitis B infection. HBsAg is a protein found on the surface of the hepatitis B virus and is the first detectable marker of infection. Our venous blood test provides highly accurate results within 1 day, helping to identify both acute and chronic Hepatitis B infections.
When to Get Tested
- Unprotected sexual contact with a new partner
- Healthcare worker or potential occupational exposure
- Born to a mother with Hepatitis B
- Shared needles or injecting equipment
- Received blood transfusion before 1991
- Travel or origin from high-prevalence region
- Checking vaccine immunity status
Symptoms to Watch For
- Many people have no symptoms (asymptomatic)
- Fatigue and general malaise
- Abdominal pain
- Nausea and vomiting
- Joint pain
- Dark urine
- Jaundice
- Loss of appetite
How It Works
Confidential consultation and risk assessment
Venous blood sample taken by trained nurses
HBsAg testing at UKAS-accredited laboratory
Results delivered securely within 1 day
Risk Factors
Frequently Asked Questions
What does a positive HBsAg result mean?
A positive HBsAg (surface antigen) result indicates active Hepatitis B infection. This could be acute (recent infection) or chronic (lasting more than 6 months). You should contact your GP for further evaluation.
Should I get vaccinated for Hepatitis B?
The Hepatitis B vaccine is highly effective and recommended for all at-risk groups including healthcare workers, MSM, people with multiple partners, and those travelling to endemic regions. Consult your GP about vaccination options.
Can Hepatitis B be cured?
Acute Hepatitis B often resolves on its own within 6 months. Chronic Hepatitis B cannot be cured but can be effectively managed with antiviral medications to prevent liver damage. Early detection is crucial.
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Ready to Get Tested?
Book your confidential hepatitis b surface antigen test london appointment today. Walk-in appointments also available at our South Kensington clinic.



