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Hepatitis B Surface Antigen (Active Infection)

Hepatitis B Surface Antigen (Active Infection)

£14.85
Screens for Hepatitis B surface antigen (HBsAg), a marker of active infection. Helps detect acute or chronic Hepatitis B, even without symptoms.
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About this test

  • Fatigue or weakness
  • Loss of appetite
  • Nausea or vomiting
  • Abdominal discomfort (especially upper right side)
  • Dark urine
  • Pale or clay-coloured stools
  • Yellowing of the skin or eyes (jaundice)
  • Joint pain
  • Low-grade fever
  • Signs of liver inflammation or dysfunction
  • No symptoms at all (commonly in early or chronic stages)

Recommended for individuals who may have been exposed to Hepatitis B through blood, unprotected sex, shared needles, or close contact with someone infected. Also suitable for those with unexplained liver symptoms, healthcare workers, people from high-risk regions, or anyone preparing for surgery, immunosuppressive therapy, or international travel. It’s also useful for routine screening in pregnancy or as part of a general liver health check.

  • Acute Hepatitis B infection
  • Chronic Hepatitis B infection
  • Asymptomatic Hepatitis B carrier state
  • Liver inflammation of unknown origin
  • Cirrhosis (from long-term Hepatitis B)
  • Hepatocellular carcinoma (liver cancer)
  • Hepatitis B reactivation in immunosuppressed individuals

Symptoms

  • Fatigue or weakness
  • Loss of appetite
  • Nausea or vomiting
  • Abdominal discomfort (especially upper right side)
  • Dark urine
  • Pale or clay-coloured stools
  • Yellowing of the skin or eyes (jaundice)
  • Joint pain
  • Low-grade fever
  • Signs of liver inflammation or dysfunction
  • No symptoms at all (commonly in early or chronic stages)

Who should be test

Recommended for individuals who may have been exposed to Hepatitis B through blood, unprotected sex, shared needles, or close contact with someone infected. Also suitable for those with unexplained liver symptoms, healthcare workers, people from high-risk regions, or anyone preparing for surgery, immunosuppressive therapy, or international travel. It’s also useful for routine screening in pregnancy or as part of a general liver health check.

When to test

  • Acute Hepatitis B infection
  • Chronic Hepatitis B infection
  • Asymptomatic Hepatitis B carrier state
  • Liver inflammation of unknown origin
  • Cirrhosis (from long-term Hepatitis B)
  • Hepatocellular carcinoma (liver cancer)
  • Hepatitis B reactivation in immunosuppressed individuals

What's measured

What gets tested