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HelpTest Code LAB549 Hepatitis B Core Antibody, IgM
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 (HBsAg) and hepatitis B surface antibody (anti-HBs) are negative
- Differentiation between acute and chronic or past hepatitis B infection in the presence of positive hepatitis B core total antibodies.
Methodology
Electrochemiluminescence Immunoassay (ECLIA)
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Serum or Plasma
Container/Tube: Red top, gold top, or light-green top (lithium heparin)
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Collection Instructions: Spin down within 2 hours of collection.
Specimen Transport Temperature
Refrigerated
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or Plasma | Ambient | 2 hours |
| Refrigerated | 7 days | |
| Frozen | 3 months |
Reference Values
| Result | Interpretation |
|---|---|
| < 0.9 COI | Non-Reactive |
|
≥ 0.9 to < 1.1 COI (tested in duplicate) |
Equivocal: Redraw specimen in two weeks and retest |
| ≥ 1.1 COI | Reactive |
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
86705