Factor X Antigen
Use
Measurement of factor X antigen concentration
Special Instructions
Turnaround time is typically 4 to 8 days from the date of specimen pickup to the release of results. Please ensure proper specimen collection to prevent delays or rejection.
Limitations
This test may be considered investigational by certain payers, including Medicare, and may not be covered as a medical benefit. The procedure has not been established as a diagnostic test for Factor X deficiencies without confirmation by another medically recognized method. As a research-use only test, the performance characteristics are not fully defined, and results should be corroborated externally before making clinical decisions.
Methodology
Immunoassay (ELISA)
Biomarkers
LOINC Codes
- 3221-9
Result Turnaround Time
4-8 days
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
2 mL
Minimum Volume
1 mL
Container
Blue-top (sodium citrate) tube
Collection Instructions
Citrated plasma samples should be collected by double centrifugation. Collect blood in a blue-top tube containing 3.2% buffered sodium citrate. Mix gently by inversion six times. No discard tube is needed unless using a winged device. Centrifuge for 10 minutes and carefully transfer plasma to a plastic transport tube, freeze immediately.
Storage Instructions
Freeze immediately and maintain frozen until testing.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Stable for eight hours. |