Hepatitis B Surface Antigen, Qualitative

Methodology

Immunoassay (IA)

Reference Range(s)

HBsAg - Non-Reactive

Alternative Name(s)

Australian Antigen, HBsAg, Hep B

Preferred Specimen(s)

2 mL serum

Alternative Specimen(s)

Plasma collected in: EDTA (lavender-top) tube

Minimum Volume

1 mL

Collection Instructions

Note: When only a single test, Hepatitis B Surface Antigen, is ordered to diagnose Hepatitis B in a pregnant woman, additional tests such as liver enzymes should be ordered to confirm the diagnosis.

Transport Container

Serum separator tube (SST)

Transport Temperature

Room temperature

Specimen Stability

• Room temperature: 7 days

• Refrigerated: 14 days

• Frozen: 30 days

Reject Criteria

Gross hemolysis • Grossly lipemic

Note: Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.