Factor VIII Activity (WEV, WSP, EM, A)
Test Code: LAB306
CPT Code: 85240
Synonyms
FactorVIIIActivity
Alias 2
F8 Activity; F8 Assay; F8 Clotting Assay; Factor 8 Functional
Specimen Type
Citrated Plasma
Specimen Container
Blue top tube (3.2% buffered sodium citrate)
Volume
3 mL
Minimum Collection Volume
1 mL
Specimen Handling
Specimens should be transported uncentrifuged in an unopened tube kept at 22-24 C. If time interval between drawing and testing exceeds 2 hours, centrifuge specimen, separate plasma into a plastic tube and ship on ice or freeze at -20 C .
Collection Procedure
Liquid blue top tube filled to capacity.
Unacceptable Conditions
Hemolyzed, clotted samples or inappropriately filled liquid blue top tubes, specimens more than 4 hours old that have not been separated and frozen at -20C or less.
Methodology
Photometric
Stability
Room Temperature: 2 hours; Frozen (-20 °C): 2 weeks
Test Includes
Factor VIII Coagulant Activity, %.
Schedule
24/7 & STAT
Turn Around Time
4 hours routine; 1 hour STAT
Place of Service
PSPH
Department
Coagulation
Select Print Details
Select an option which you would like to print: