HEPATITIS B SURFACE ANTIGEN

Message

All positive specimens will be sent to Quest for LAB498- Hep B Surface Antigen with Reflex Confirmation.

Test Code

LAB304131

CPT Codes
87340

Preferred Specimen

One 5 mL Gold top tube

Minimum Volume

2.0 mL blood
Required for Testing: 0.5 mL serum

Other Acceptable Specimens

Red top tube

Instructions

Avoid freeze-thaw cycling

Sample must be centrifuged within two hours of collection. Serum/plasma must be removed from the red cells and put into aliquot tubes following centrifugation.

Transport Temperature

Refrigerated

Specimen Stability

Centrifuge within 2 hours after collection
Ambient: 24 hours Refrigerated: 6 days Frozen: not specified

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

Turbid, lipemic, grossly hemolyzed, or heat-inactivated specimens. Cadaveric specimens

Methodology
Chemiluminescent Microparticle Immunoassay

Setup Schedule

Sunday- Saturday

Reference Range

Nonreactive (<1.00 S/CO)

Clinical Significance

Usually detectable two weeks to two months before clinical symptoms and as little as two weeks after infection. It is usually present for two to
three months. When test is positive, the person tested is infected with Hepatitis B virus. Persistent HBsAg positivity beyond six months
indicates a chronic carrier state or chronic Hepatitis B. This test is performed as a screening test for pregnant women and to look for
infection in donor subjects.

Performing Laboratory
West Virginia University Hospital, Inc.
Berkeley Medical Center
Braxton County Memorial Hospital
Camden Clark Medical Center
Reynolds Memorial Hospital
Summersville Regional Medical Center
St Joseph's Hospital

Additional Information
Test Change Notification

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.