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Test Code HBMC or LAB549 Hepatitis B Core IgM, Serum

Important Note

Patient Preparation: For 12 hours before HBMC do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins. Biotin can interfere with many immunoassay tests.

HBMC is also available as a part of the Hepatitis Panel, Acute (LAB551)

Specimen Requirements

Container Type:

Optimal: Gold 

Acceptable: Red.

 
Optimal Collection Volume: 

4.5mL; full tube
Minimum Volume:

1 mL whole blood
Collection Instructions:

Gently invert the sample 5-6 times after collection.
Specimen Transport:

Refrigerate
Processing Instructions: 

1. Allow the specimen to clot for 30 minutes.

2. Centrifuge specimen within 2 hours of collection.

3. After centrifugation, specimen tubes without a gel barrier should have the serum aliquoted to a false bottom container.

4. Keep the serum refrigerated until testing can be performed.

Specimen Stability

Specimen Type Temperature Time
Serum Refrigerated 7 days
Room Temperature 7 days
Frozen 3 months

Specimen Rejection Criteria

Hemolysis Mild OK; Moderate OK; Gross Reject
Lipemia Mild OK; Moderate OK; Gross Reject
Icterus Mild OK; Moderate OK; Gross Reject
Other Quantity not sufficient

Useful For

Diagnosis of acute hepatitis B virus (HBV) infection.

 

Identifying acute HBV infection in the serologic window period when hepatitis B surface antigen and anti-hepatitis B surface are negative

 

Differentiation between acute and chronic or past HBV infections in the presence of positive anti-hepatitis B core

Methodology

Roche Cobas - Electrochemiluminescence immunoassay

Reference Ranges

Negative

Interpretive

HBIM - Clinical & Interpretive: Hepatitis B Core Antibody, IgM, Serum (mayocliniclabs.com)

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo and Battle Creek

Sample Retention Time

7 days

CPT Code

86705

LOINC Code

31204-1

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