Orderable EAP code:

LAB102550

Billable EAP Codes:

80002037 x 1

CPT Codes:

87340 x 1

Lab Section:

Immunology

Includes:

Hepatitis B Surface Antigen if Reactive reflex to Confirmation:
Hepatitis B Quantitative by PCR, Blood [LAB101348]
Additional charges may apply.

Turnaround Time:

Routine: 2 days, additional time for reflex testing.

Test Schedule:

7 days a week.

Interpretation:

Nonreactive = Specimen is considered negative for HBsAg.

Pending Confirmation = Screening test is reactive and pending confirmation, as hepatitis B surface antigen screening test may yield a false positive result.

Specimen Requirements:

The minimum testing age is greater than 28 days.

4 ml blood collected in serum separator tube (SST) or EDTA tube. Send 2 mL serum or plasma aliquot.

The minimum volume is 250 uL; 1.5 mL is needed to include reflex testing.

Room temperature specimens are stable for 24 hours.
Refrigerated specimens are stable for 6 days.
Room temperature and refrigerated specimens may be stored on or off the clot or in separator gel.

Frozen (-10°C or colder) specimens are stable for 3 freeze/thaw cycles.
Remove the specimen from the clot or separator gel prior to storage.
 

Pediatric Specimen Requirements:

As above.

Reference Range:

Nonreactive

Comments:

Used for the qualitative detection of hepatitis B surface antigen (HBsAg).  May be used to screen for HBV infection in pregnant women to identify neonates who are at risk for acquiring hepatitis B during the perinatal period.  May be used to provide presumptive evidence of infection with the hepatitis B virus (HBV).

This test is not intended for use in screening blood, plasma or tissue donors.

Synonyms:

HBS
HBSAG
Hep B Surf AG
Hep B Surf AG Confirmation