Test Overview
Method
Clot-based Assay
Method Description
Optical/Clotting
Result Included
Factor XII
Aliases/Synonyms
Coagulation Factor XII
Specimen
Specimen Type
Plasma (Citrate)
Containers
Collection Containers
Light Blue Tube (Citrate)
Volume
Sample Volume
2 mL
Collection & Handling
Handling Information
Prepare platelet poor plasma and freeze immediately. Store and send frozen.
Additional Information
Submit separate specimen for each test ordered.
Stability
| Ambient | Frozen |
|---|---|
| 4 hours | 14 days (-20°C) |
Stable up to six months at -70°C. <b>If the specimen thaws, it is unsuitable for analysis.</b>
Rejection Criteria
| Criteria | Specification |
|---|---|
| Specimen | Not frozen |
Performance & Interpretation
Turnaround Time
4 days
Results
Name
Units
Reference Range
Conversion
-
Coagulation Factor XIIU/mL0 - 3 m: 0.10 - 1.00
≥3 m: 0.50 - 1.50% x 0.0100
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| FAC12 | Factor XII Assay | 29244 | U/mL |
| Senior Technologist Review, Special Coagulation (Only reported when applicable) | 65735 | ||
| Clinical Hematologist Review, Special Coagulation ((Only reported when applicable) | 65736 |
Test Version
Last Updated
2023-10-27