Casandra
Casandra Test Code QD41520Version 1 (DRAFT)
Performing Lab
Hepatitis B Surface Antigen, Quantitative, Monitoring (Not for Diagnosis)
Also known as: HBsAg Quantitative
Clinical Use
Order TestUse
Quantitative measurement of HBsAg may be used to confirm ongoing HBV replication and monitor responses to antiviral therapy. Published studies support the viewpoint that repeatedly low to undetectable HBsAg values are a good predictor of sustained viral clearance. This test should be used on individuals previously diagnosed with hepatitis B infection by qualitative HBsAg testing.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Other)
Biomarkers
HBsAg
AnalyteHBsAg concentration • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
2 mL
Minimum Volume
1 mL
Container
transport tube
Causes for Rejection
Gross hemolysis • Grossly lipemic • Samples other than serum
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 30 days |