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Test Code HBCM Hepatitis B Core IgM Antibody, S

Additional Codes

Powerchart: Hepatitis B Core Antibody IgM

MA Cerner: Hep B/C Ab Igm.

Specimen Requirement

1 mL of SST serum

Additional Specimen Collection Information

Collect blood in a serum gel tube. Serum should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 8 hours of collection. Hemolyzed specimens are not acceptable. Samples with >1+ lipemia must be cleared prior to analysis.

Useful For

  • Diagnosis of acute hepatitis B infection
  • Identifying acute hepatitis B virus (HBV) infection in the serologic window period when hepatitis B surface antigen and anti-hepatitis B surface are negative
  • Differentiation between acute and chronic/past hepatitis B infection in the presence of positive anti-hepatitis B core


Testing is performed Monday through Sunday.
Routine: Typically completed within 4 hours after the specimen arrives at the testing site.
STAT: Typically completed within 1 hour after the specimen arrives at the testing site.

CPT Code Information

86705 hepatitis B core antibody, IgM

LOINC Code Information

31204-1  Hepatitis Bvirus core IgM [Presence] in serum

Test Method

Two-Step Immunoassay; Abbott Architect

Reference Values