Hepatitis B Surface Antigen (HBSAG)
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| Synonyms:
| HBsAg |
| Specimen: | Blood; (1) SST (serum separator tube) or Red (no preservative) top vacutainer tube. |
| Volume: | Full primary tube. |
| Minimum Volume: | 194 microL |
| Collection: | If tube other than an SST is collected, transfer serum to a tightly capped plastic aliquot tube within 2 hours of collection for transport.
Refrigerate at 2-8 °C for 48 hours; freeze at -20°C for longer storage.
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| Rejection Criteria: | Improper labeling. |
| Reference Range: | Negative |
| Methodology: | Microparticle enzyme immunoassay (MEIA) |
| Test Use: | Detects acute or chronic Hepatitis B or carrier state |
| Additional Information: | Reactive test should be confirmed by neutralyzation confirmatory test sent to Reference Lab or presence of anti-HBc and/or anti-HBs.
HbsAg Positive: This indicates either acute or chronic active infection with Hepatitis B. Following immunologic recovery |
| Testing Includes: | Tests for antigen to hepatitis B. |
| Testing Facility: | AnMed Laboratory |