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Hepatitis B Surface Antibody (HBs Ab)

Mnemonic:    [HepBs Ab]
Name:    Hepatitis B Surface Antibody (HBs Ab)
Specimen:    1 mL serum from a Red SST or Red top tube. Serum is the preferred sample for Hepatitis testing.

Samples should be frozen (-20C or below) if testing will not be completed within 48 hours. Repeated freeze/thaw cycles should be avoided as this can cause analyte deterioration.
Minimum Spec:    0.5 mL
Spec Stability:    Stable 2 days refrigerated.
  Method:    Chemiluminescent Immunoassay
Note:    Used to determine immune status.

Measures total antibody to hepatitis B surface antibody.
Processing Info:    If an add-on request is made to a sample >2 days old that has not been frozen, send to ARUP.