Hepatitis B Surface Antibody, Qualitative
Use
Qualitative measurement of hepatitis B surface antibody (anti‑HBs) to determine whether an individual has immunity to hepatitis B virus, either due to past infection or vaccination. A reactive (“immune”) result indicates presumed immunity, whereas a nonreactive (“non‑immune”) result suggests lack of immunity and may prompt further evaluation or vaccination. May also aid in laboratory diagnosis when assessed alongside additional hepatitis B serologic markers.
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Immunoassay (Other)
Biomarkers
Result Turnaround Time
2 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
2 mL collected; 0.5 mL aliquot sent
Minimum Volume
0.5 mL
Container
Serum separator tube (SST) or EDTA tube
Collection Instructions
Blood collected in SST or EDTA tube; send 0.5 mL serum or plasma aliquot; remove from clot or separator gel prior to storage.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 3 days (21–30 °C) |
| Refrigerated | 7 days (2–8 °C) |
| Frozen | Frozen at –20 °C or colder – 3 freeze/thaw cycles |