Hepatitis B Surface Antibody, Immune-689
Test info
Hepatitis B surface antibody
HBs antibody
HbsAg immune status
Specimen
Samples should not be taken from patients receiving therapy with high biotin doses (i.e. > 5 mg/day) until at least 8 hours following the last biotin administration.
Immediately following collection, thoroughly mix sample by gently inverting 5 times
- Allow sample to clot for a minimum of 30 minutes
- Spin within two (2) hours of sample collection
Gold serum separator (SST) tube
Lavender:
Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times, to prevent clotting
Red:
- Allow sample to clot
- Spin within two (2) hours of sample collection
- Transfer serum to a False bottom plasma/serum transport vial/tube (AHL), labelled as serum
Lavender:
- Spin within two (2) hours of sample collection
- Transfer plasma to a False bottom plasma/serum transport vial/tube (AHL), labelled as the appropriate plasma type
Refrigerated (preferred) - 6 days
Ambient - < 8 hours
Frozen - 3 months
- Improper labels (unlabeled or mislabeled)
- Hemolysis (some procedures)
- Improper anticoagulant or ratio
- Delay in transport
- Improper storage temperature affecting results
- Improper container
- Leaking container resulting in compromised specimen
- Quantity not sufficient (QNS)
Performance
Electrochemiluminescence immunoassay (ECLIA)
Clinical and Interpretive info
|
<8.5 mIU/mL |
Considered not immune to HBV infection.
|
|
≥8.5 to <11.5 mIU/mL |
Indeterminate result, unable to determine if antibody is present at levels consistent with immunity |
|
≥11.5 mIU/mL |
Considered immune to HBV infection. |