Hepatitis Bs Antibodies (HBsAb), Serum/Plasma


See Also Hepatitis Bs Antigen (HBsAg), Serum


HBsAb is a protective antibody that neutralises the virus. During convalescence, HBsAg and HBeAg are cleared, and HBsAb and HBeAb develop. The presence of HBsAb following acute infection indicates recovery and immunity from re-infection. HBsAb is also detected among persons who have received hepatitis B vaccine.

Sample Type, Quantity & Conditions

1 ml Serum 1 ml K2-EDTA, Na, Li-Heparin, or Sodium Citrate Plasma Stability: 14 Days at 2-8 °C > 14 Days at -20 °C

Special Precautions

Avoid grossly haemolysed samples.

Normal Range

Non-Reactive: < 10 mIU/mL Reactive: ≥ 10 mIU/mL

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