| 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
MessageTest performed at York Hospital Laboratory.
Test Code
HBSAG
Alias/See Also
HBsAg
CPT Codes
87340
Includes
If HBsAg is positive or reactive, HBsAg Confirmation (confirmation testing) will be performed at an additional charge.
Preferred Specimen
0.3 mL serum collected in a small serum separator tube (in-house testing)
AND
2 mL serum collected in a large serum separator tube (possible confirmation testing)
AND
2 mL serum collected in a large serum separator tube (possible confirmation testing)
Minimum Volume
0.3 mL (in-house testing)
AND
1 mL (possible confirmation testing)
AND
1 mL (possible confirmation testing)
Other Acceptable Specimens
Serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial
Instructions
One full serum separator tube (SST) is acceptable for all hepatitis confirmation testing.
Confirmation testing will not be performed if only one specimen is submitted.
Confirmation testing will not be performed if only one specimen is submitted.
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: 8 hours
Refrigerated: 7 days
Frozen: Indefinately
Refrigerated: 7 days
Frozen: Indefinately
Methodology
Chemiluminescence
Setup Schedule
Tuesday, Friday
Report Available
4 Days
Reference Range
Negative
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.
