Casandra
Casandra Test Code QD28219Version 1 (DRAFT)
Performing Lab
Factor VIII Antigen
Clinical Use
Order TestUse
An ELISA for Factor VIII antigen may be used in conjunction with functional assays in the assessment of Factor VIII replacement therapies, assessment of carrier status, and to distinguish patients who may be cross-reactive material (CRM) positive.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
New York Approved
Methodology
Immunoassay (ELISA)
Biomarkers
Factor VIII Antigen
ProteinQuantitation • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
LOINC Codes
Result Codes
- 3213-6
Result Turnaround Time
2-31 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
1 mL
Minimum Volume
0.5 mL
Container
Plastic screw‑cap vial
Collection Instructions
Centrifuge light blue‑top tube for 15 min at approximately 1500 g within 60 minutes of collection; remove plasma avoiding buffy layer; centrifuge again; transfer platelet‑poor plasma (<10,000/mcL); freeze immediately and ship on dry ice; do not thaw.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 hours |
| Refrigerated | 48 hours |
| Frozen | 30 days at −20 °C; 6 months at −70 °C |