Hepatitis A & B titres to check for immunity
Posted by dkwinter

Labs to order when a patient doesn't know if they've had Hepatitis A and/or Hepatitis B immunization:

  • HBsAb (normal/protective is >= 10 IU/L)
  • HAV IgG (normal/protective is "Reactive")

 

If patient lacks immunity to Hepatitis A:

  • Give Hep A vaccination (Havrix), 2 dose series:
    • Havrix 1440 ELISA units (1 mL), 1 dose on day 0 and booster at 6-12 months.
    • Give first dose at least 2 weeks prior to potential exposure.

 

If patient lacks immunity to Hepatitis B:

  • Give Hep B vaccination (Engerix-B; Recombivax HB), 1 mL/dose, 3 dose series:
    • 0, 1 months, 6 months
      • OR
    • 0, 2 months, 6 months