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HelpTest Code HEP Bs AG Hepatitis B Surface Antigen, Serum
Additional Codes
LAB471
Collection Method
Venous collection
Minimum Volume
0.5ml
Container
Gold Top / Serum Separator / Additive Free
Acceptable Specimens
Serum:
- Gold Top SST
- Red Top
Plasma:
- Light Geen Top (Lithium heparin)
Reference or Target Ranges
Nonreactive
Reportable Units
Reactive/Nonreactive
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | 2200 mg/dL |
| Icterus Threshold | 40 mg/dL |
| Lipemia Threshold | 2200 mg/dL |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Specimen Stability
| Ambient | 6 days |
| Refrigerated (4°C to 8°C) | 14 days |
| Frozen(-40°C to 0°C) | 6 months |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Routine: 4 hours |
| Stat Availability | No |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
87340
Last review/edit date
2025
Additional Information/Important Notes
Result Clarification
Nonreactive: Hepatitis B surface antigen was not detected. This does not exclude the possibility of exposure to, or infection with Hepatitis B Virus.
Reactive: Hepatitis B surface antigen was detected.