Back to Test Catalogue

Factor VIII Activity Clotting, Plasma

Test ID: FAC8

Test

Aliases/Synonyms

Coagulation Factor VIII Inhibitor

Method

Clotting Assay

Report Includes

Factor VIII, Clotting Assay

Specimens

Plasma (Citrate)

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

25-Jul-2024

Specimen

Specimens

Plasma (Citrate)

Collection Containers

Light Blue Tube (Citrate)

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 4 hours
Frozen 14 days (-20°C)

Additional Stability Information

Stable up to six months at -70°C. If the specimen thaws, it is unsuitable for analysis.

Rejection Criteria

Hemolysis Gross
Specimen Not frozen

Test Version

25-Jul-2024

Performance / Interpretation

Method

Clotting Assay

Turnaround Time

5 days

Results

Name Units Reference Range Conversion Factor
Coagulation Factor VIII, Clotting Assay U/mL
  • Adult: 0.50 - 1.50
  • Pediatric (< 3 days): 0.83 - 3.29
% x 0.0100

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

25-Jul-2024

Interface / Setup

HL7 Interface Codes

Order Code Result Codes Units
FAC8 29236Factor VIII Assay U/mL

Test Version

25-Jul-2024