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HelpTest Code HEP Bc AB Hepatitis B Core Antibody, IgM, Serum
Additional Codes
LAB549
Collection Method
Venous collection
Container
Gold Top / Serum Separator / Additive Free
Specimen Type
Preferred
Serum-Gold Top SST or Red Top
Acceptable
Plasma-Light Green Top
Minimum Volume
0.5ml
Specimen Stability
| Ambient | 2 hours |
| Refrigerated (4°C to 8°C) | 7 days |
| Frozen(-40°C to 0°C) | 3 months |
Reference or Target Ranges
Nonreactive
Result Interpretation
Nonreactive: IgM antibodies to HBc were not detected; this does not rule out exposure to Hepatitis B virus.
Reactive: Presumptive evidence of IgM antibodies to HBc. Specimen will be sent to Mayo Medical Laboratories for confirmatory testing.
Reportable Units
Reactive/Nonreactive
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | 2000 mg/dL |
| Icterus Threshold | 25 mg/dL |
| Lipemia Threshold | 1000 mg/dL |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time | Routine: 4 hours |
| Stat Availability | No |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
86705
Last review/edit date
2025