Test Overview
Method
Clotting Assay
Result Included
Factor VIII, Clotting Assay
Aliases/Synonyms
Coagulation Factor VIII Inhibitor
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 (double spun) 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 |
|---|---|
| Hemolysis | Gross |
| Specimen | Not frozen |
Performance & Interpretation
Turnaround Time
5 days
Results
Name
Units
Reference Range
Conversion
-
Coagulation Factor VIII, Clotting AssayU/mLAdult: 0.50 - 1.50
Pediatric (< 3 days): 0.83 - 3.29% x 0.0100
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| FAC8 | Factor VIII Assay | 29236 | 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
2024-07-25