Test Overview
Test Methodology

Chemiluminescent Immunoassay

Test Usage

Specimens are screened for the presence of Hepatitis B surface antigen. Hepatitis B Surface Antigen is the first antigen to appear following an infection and can be detected serologically as an aid in the lab diagnosis of acute hepatitis infection. The performance of this assay has not been established with cord blood, neonatal specimens, cadaver specimens, heat-inactivated samples or body fluids other than serum.

Reference Range *

Non-Reactive

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Specimen may be stored at room temperature up to 8 hours; specimen should be frozen if assay will not be completed within 72 hours of collection.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

4 hours

Soft Order Code
HBSAG
MiChart Code
Hepatitis B Surface Antigen
Synonyms
  • Australia Antigen
  • HAA
  • HBSA
  • Hepatitis Associated Antigen
  • Hepatitis B Antigen
  • HB-AG
  • HBA
  • HEPATITIS B SURFACE ANTIGEN
Laboratory
Chemical Pathology
Section
Automation
STAT Availability

STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).

Specimen Requirements
Collection Instructions

Collect specimen in an SST or red top tube. Centrifuge, aliquot serum into a plastic vial and refrigerate up to 14 days (3 days in primary tube) or freeze for longer storage.

Alternate Specimen
Red Top Tube; Green Top Tube (heparinized plasma); Lavender Top Tube (EDTA plasma)
Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Billing
CPT Code
87340
Fee Code
JA034
LOINC
5196-1
Resources