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Hepatitis B Surface Antigen (HBsAg)

Test Code
HBSAG


CPT Codes
87340

Preferred Specimen
1.0 mL serum


Transport Container
Gold top tube/Serum Separator Tube


Transport Temperature
Room Temperature/Refrigerate.


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis


Methodology
Chemiluminescent Microparticle Immunoassay

Reference Range
Nonreactive. Reactive result confirmed by Neutrilization


Clinical Significance


Surface antigen usually appears in the seum after an incubation period of 1 to 6 months following exposure to Hepatitis B virus and peaks shortly after onset of symptoms.  It typically disappears with 1 to 3 months.  Persistence of Hepatitis B surface antigen for greater than 6 months is prognostic of chronic Hepatits B infection.  Reactive samples will be confirmed by neutrilization.



 





The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.