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HelpTest Code LAB472 Hepatitis Bs Antibody (Anti-HBs), Qualitative
Reporting Title
Hepatitis Bs Ab
Methodology
Roche Diagnostics Electrochemiluminescence Immunoassay
Useful for qualitative determination of total antibodies to hepatitis B surface antigen. Used to determine immune response following vaccination and to detect sero conversion with recovery in cases of hepatitis B infection.
Performing Laboratory
OhioHealth Laboratory Services-RMH Special Testing
Specimen Requirements
Preferred;
Draw blood in a gold-top serum gel tube(s). (Hemolyzed specimen is not acceptable.) 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 K2 EDTA is acceptable
Heterophile antibodies may interfere with this assay.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated | 6 days |
| Frozen | 3 months | |
| Plasma | Refrigerated | 2 days |
| Frozen | 3 months |
Specimen Transport Temperature
Refrigerate: OK
Frozen: OK
Ambient: NO
Reference Values
Unvaccinated, unexposed to hepatitis B: negative
Note: 1. This assay does not distinguish between vaccine-induced antibodies and infection-induced antibodies. A total antibody hepatitis B core assay may help resolve this.
2. A negative result does not indicate that patient was not vaccinated or was not infected with hepatitis B virus.
Day(s) Test Set Up
Monday through Friday: 24/7
Saturday and Sunday: Day shift
Test Classification and CPT Coding
86706