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Hepatitis B Surface Antigen w/ Confirmation
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
HBSAG
Alias/See Also
498;
HBSAG;
HBV-SAG;
Hep B Sur AG;
Hep BSAG;
HBSAG;
HBV-SAG;
Hep B Sur AG;
Hep BSAG;
CPT Codes
87340
Includes
Confirmation is performed at an individual charge, when a sample screens positive.(CPT code(s) 87341).
Preferred Specimen
2 mL serum (minimum 1 mL, if the test needs to be repeated for any reason, it may not be possible to obtain a result)
Instructions
SST or Red top: Avoid hemolysis. Invert a minimum of 5 times, then allow to clot in an upright position for 30 minutes. Centrifuge the the tube for at least 10 minutes. Keep tightly stoppered.
Transport Container
SST (speckled top), Red top , Plastic Vial (transfer) tube
Transport Temperature
Room Temperature or Refrigerated (preferred)
Specimen Stability
Room Temperature = 3 days
Refrigerated = 7 days
Frozen = at least 7 days
Refrigerated = 7 days
Frozen = at least 7 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Rejected for gross hemolysis and lipemia
Methodology
EIA
Setup Schedule
Monday - Friday
BS
BS
Report Available
1 - 3 days
Reference Range
| SEX | AGE | Report Normals | Units |
| N/M/F | 1000Y | Negative |
Clinical Significance
Hepatitis B 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.
Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439
Last Updated: November 22, 2021
