|
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Hepatitis B Surface Antigen
Test CodeHEPAS
Includes
Screen positive results will be sent to Quest Diagnostics for confirmation
Preferred Specimen
2 mL serum
Minimum Volume
1 mL
Other Acceptable Specimens
None
Instructions
None
Transport Container
Serum separator tube (SST)
Transport Temperature
Refrigerated (cool packs)
Specimen Stability
Refrigerated: 5 days
Frozen: 3 months
Frozen: 3 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic
Methodology
Immunoassay (IA)
Setup Schedule
24/7
Report Available
Same day (unless screen is positive)
Limitations
Results obtained from immunosuppressed patients should be interpreted with caution. Patients receiving mouse antibody therapy may produce false-negative results.
Reference Range
Non-Reactive
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.
