- YF8
Factor VIII Assay (Activity)
Specimen:
Test Code
YF8
Specimen Name
Factor VIII Assay (Activity)
Collect
2-Blue Top (Na-Citrate)
Submit
4-0.5 mL (Min: 2-0.5 mL) aliquots Plasma CRITICAL FROZEN
Special Handling
Tubes MUST be full. DO NOT overfill or underfill. Tube MUST be mixed immediately after filling with blood. Gently mix tube by inverting 5 to 6 times. Vigorous mixing or shaking may cause hemolysis, which will affect the result. DO NOT draw blood into a heparinized syringe or from a heparinized line. DO NOT PUT ALL PLASMA IN ONE ALIQUOT TUBE.
Rejection Criteria
Specimens collected in an anticoagulant other than 3.2% sodium citrate, under or overfilled specimens, clotted specimens, grossly hemolyzed, lipemic, or icteric specimens, refrigerated or frozen whole blood specimens.
Stability
Ambient 4 hours, Refrigerated Unacceptable; Frozen 1 month
Methodology
Instrument: Instrumentation Laboratory ACL Top 750
Performed
Sunday - Saturday
Reported
2-4 days
CPT Codes
- 85240
Components
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Additional Information
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Common Lab Definitions
- Serum
- Plasma
- STT