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Test Code HBGCD Hepatitis B Surface Antigen for Cadaveric or Hemolyzed Specimens, Serum


Additional Testing Requirements


Testing for acute hepatitis B virus (HBV) infection should also include HBIM / Hepatitis B Core Antibody, IgM, Serum as during the acute HBV infection "window period," HB surface (HBs) antigen and HBs antibody may not be detected.



Necessary Information


Date of collection is required.



Specimen Required


Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 2 mL

Collection instructions:

1. Centrifuge blood collection tube per collection tube manufacturer's instructions (eg, centrifuge within 2 hours of collection for BD Vacutainer tubes).

2. Aliquot serum into plastic vial.


Forms

If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request (T728) with the specimen.

Useful For

Testing cadaveric and hemolyzed blood specimens for hepatitis B surface antigen (HBsAg); US Food and Drug Administration-licensed for use with hemolyzed specimens

 

Diagnosis of acute, recent (<6-month duration), or chronic hepatitis B infection; determination of chronic hepatitis B carrier status

 

This test is not useful during the "window period" of acute hepatitis B virus (HBV) infection, (ie, after disappearance of HBsAg and prior to appearance of anti-HBs antibody).

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
BNTCD HBsAg Confirm Cadav/Hemol, S No No

Testing Algorithm

All reactive results are confirmed by a neutralization procedure at an additional charge.

Method Name

Enzyme Immunoassay (EIA)

Reporting Name

HBsAg Cadaver/Hemolyzed, S

Specimen Type

Serum

Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 30 days
  Ambient  7 days
  Refrigerated  7 days

Reject Due To

Gross hemolysis OK
Gross lipemia Reject
Gross icterus Reject

Reference Values

Negative

Day(s) Performed

Monday, Thursday

Report Available

1 to 7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

87340

87341 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
HBGCD HBsAg Cadaver/Hemolyzed, S In Process

 

Result ID Test Result Name Result LOINC Value
83626 HBsAg Cadaver/Hemolyzed, S 5196-1