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HelpTest Code LAB549 Hepatitis B Core IgM Antibody (Anti-HBc IgM), Plasma or Serum
Infectious
Reporting Title
Hepatitis B Core IgM
Methodology
Roche Diagnostics Electrochemiluminescence Immunoassay
Note: This test is included in LAB551 “Hepatitis Acute Screen (AMA Approved Panel).”
Useful for presumptive laboratory diagnosis of acute or recent (usually within 6 months) hepatitis B viral (HBV) infection.
Performing Laboratory
OhioHealth Laboratory Services-RMH Special Testing
Specimen Requirements
Preferred:
Serum
Draw blood in a gold-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
Alternate:
Plasma from either lithium or sodium heparin and K2 EDTA are acceptable
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum and plasma | Refrigerated | 7 days |
| Ambient | ||
| Frozen | 3 months |
Specimen Transport Temperature
Refrigerate: OK
Ambient: OK
Frozen: OK
Reference Values
Negative (normal)
A negative result does not preclude recent primary infection.
An indeterminate result is very close to cutoff. It is recommended that these patients be closely monitored at 1 week intervals to determine if result becomes reactive (associated with acute infection) or negative (associated with recovery).
Critical value: Positive
Alerting category: First instance called within 8 hours
Day(s) Test Set Up
Monday through Friday: 24/7
Saturday and Sunday: Day shift
Test Classification and CPT Coding
86705