Factor XII Activity

Overview

  • EPIC Code:
  • LAB310
  • Soft Test Code:
  • FCT12
  • Send Out Test Code:
  • 362X / 29153
Alternate Names
  • Factor XII Assay

Specimen Collection & Preparation

Specimen Requirements

3.0 mL platelet poor plasma from a Blue Top Tube - 3.2% Na Citrate in a Plastic Vial


Transport And Storage

Unacceptable Ambient
Unacceptable Refrigerated
28 days Frozen


Collection Instructions

Please submit a separate, frozen vial for each special coagulation assay ordered. 

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


Neonatal Volume

Clinical Interpretation

Reference Range:

75% - 150%


Methodology:
  • Photometric Clot Detection

Production Schedule

Sites Performed
  • Quest - Chantilly
Days Performed
Monday
Wednesday
Friday
Departments
  • Sendouts - Clinical
Turn Around Time

1 to 4 days


Coding & Compliance

CDM

01454015


CPT Coding

85280