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  • HBsAg (Hepatitis B Surface Antigen)

HBsAg (Hepatitis B Surface Antigen)

Tube Type

Test ID   LAB471
EPIC Order
  HEPATITIS B SURFACE AG
CPT Code(s)   87340 (with 87341, neutralization, if positive)
Group/Individual Test   Individual
Laboratory   Clinical Immunology
Tube Station   30
Specimen Routine: 2 mL blood/Serum Separator Tube/Gold Top
 Availability Routine: Monday-Friday; See Comments for additional information
  STAT:

Stat requests require supervisor/director approval. 

(L&D only)

Turnaround Time   1 - 3 Days
Reference Range Normal: Negative

Internal Reference Testing Specimen Handling Instructions:

Centrifuge, Refrigerate
Comment Specimens submitted for detection of HBsAg are tested using a chemiluminescent microparticle immunoassay (CMIA).   This automated assay on the Abbott Architect system provides a qualitative determination of the presence of HBsAg.  Results are reported as non-reactive or reactive.  Reactive results are only reported when the presence of HBsAg is confirmed with the HBsAg confirmation (neutralization) assay.  Successful confirmation is indicated by the result “reactive, confirmed by neutralization”.  Results of this test should be used in conjunction with other serologic tests for HBV for the diagnosis of acute and chronic HBV infection.  A nonreactive result does not rule out infection as the HBsAg may be below the limits of detection or not react with the antibodies in this assay.

Reviewed by gloria_crawford on June 28, 2016

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514

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