Test Overview
Method
Clotting Assay
Result Included
Factor XI
Aliases/Synonyms
Coagulation Factor XI
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 or clotted |
| Hemolysis | Present |
Performance & Interpretation
Turnaround Time
4 days
Results
Name
Units
Reference Range
Conversion
-
Coagulation Factor XIU/mL< 3 days: 0.07 - 0.79
Adult: 0.50 - 1.50% x 0.0100
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| FAC11 | Factor XI Assay | 29242 | 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