Factor V Activity

Last Modified: 8/31/2023 3:18:16 PM


Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements:

1.0 mL frozen platelet poor plasma from a Blue Top Tube - 3.2% Na Citrate in a Plastic Vial
Collection Instructions: Centrifuge light blue-top tube for 15 minutes at approximately 1500 x g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid WBS/platelet buffy layer and place
into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial.
Plasma must be free of platelets (< 10,000/uL). Freeze immediately and ship on dry ice.

Avoid Hemolysis 
Minimum Volume: 0.5 mL Platelet Poor Plasma
Transport & Storage: Temperature/Stability: 14 days Frozen
Reference Range: 65% - 150%
Critical Ranges:  
Test Comments:  
Methodology: Photometric Clot Detection
Clinical Significance: Bleeding disorders may be due to inherited or acquired deficiencies of a clotting factor
Documentation:  
Custom Panel: No

PRODUCTION SCHEDULE

Turn Around Time: 4 to 7 days
Days Performed: Monday, Tuesday, Wednesday, Thursday, Friday
Sites Performed: Quest - Chantilly
PHL Test Code: FACT5
EPIC Test Code: LAB304
Send Out Test Code: 344X / 29183
Alternate Test Names: Factor V Assay
Included Tests:  
CPT Coding: 85220

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