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Hepatitis B Surface Antigenwith Reflex Confirmation

Test Code
498


CPT Codes
87340

Includes
Positive samples will be confirmed based on the manufacturer's FDA approved recommendations at an additional charge (CPT code(s): 87341). Note: When only a single test, Hepatitis B Surface Antigen, is ordered to diagnose Hepatitis B in a pregnant woman, a


Preferred Specimen
2 mL serum


Transport Container
Plastic screw-cap vial


Transport Temperature
Room temperature


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis ; Gross lipemia


Methodology
Immunoassay

Clinical Significance
Surface antigen usually appears in the serum 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 within 1 to 3 months.Persistence of Hepatitis B surface antigen for greater than 6 months is a prognostic indicator of chronic Hepatitis B infection. See Hepatitis in the Infectious Disease section of Test Application and Interpretation.




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.