Hepatitis B Surface Ab
Test Mnemonic
AHBSAG
CPT Codes
- 86706 - QTY (1)
LOINC ®
22322-2
Aliases
- HBsAb
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Serum | SST (Gold) | Refrigerated |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Plasma | EDTA (Lavender) |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.25 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 3 days |
| Frozen | 14 days |
| Refrigerated | 7 days |
Days Performed
Sun - Sat
Turnaround Time
1 - 3 days
Methodology
| Name | Description |
|---|---|
| Chemiluminescent Microparticle Immunoassay (CMIA) |
Reference Range
| Hepatitis B Surface Ab, Quant | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| <8.00 mIU/mL: Negative; 8.00-11.99 mIU/mL: Equivocal; > or = to 12.00 mIU/mL: Positive |
Special Info
The assay does not differentiate Hepatitis B surface antibody from vaccination or natural infection.
Clinical Info
To assess immune status to HBV due to past infection or vaccination. Negative values: No evidence of antibodies to Hepatitis B surface antigen. Equivocal values: Indeterminate result. In patients who were vaccinated 6-8 weeks prior to this draw or previously infected with HBV, repeat testing is suggested. Those who were vaccinated for Hepatitis B virus years ago, may fall into this category due to waning immunity over time. Clinical correlation is required. Positive values: These results are consistent with immunity to the hepatitis B virus due to previous exposure to Hepatitis B virus or Hepatitis B vaccination.
Clinical Limitation
Test is not intended for use in screening blood, plasma, or tissue donors. Performance characteristics have not been established for immunocompromised patients. Performance has not been established for the use of cadaveric specimens. Criteria for Rejection: Heat-inactivated, pooled, grossly hemolyzed, obvious microbial contamination.