Factor XIII, Functional

Last Modified: 7/10/2020 9:41:13 AM

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

1.0 mL Platelet Poor Plasma from a Blue Top Tube - 3.2% Na Citrate in a Plastic Vial

Collection Instructions: Platelet poor plasma: 
Centrifuge light blue-top tube 15 minutes at approximately 1500 x g within 60 minutes of collection. 
Using a plastic pipette, remove plasma, taking care to avoid the WBC/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/mcL). 
Freeze immediately and ship on dry ice. 

Note oral anticoagulant therapy on order
Minimum Volume: 0.3 mL Platelet Poor Plasma
Transport & Storage: Temperature/Stability:

24 hours Ambient
24 hours Ambient
14 days Frozen

Rejection Criteria: Thawed Specimen
Reference Range: 57-192 % activity
Critical Ranges:  
Test Comments:  
Methodology: Chromogenic
Clinical Significance: Low Factor XIII levels, i.e., <15%, may cause a bleeding disorder and levels <2% have been associated with spontaneous introcranial hemorrhage
Documentation: Research Use Only
This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.
Custom Panel: No


Turn Around Time: 2 to 3 days
Days Performed: Thursday
Sites Performed: Quest - Chantilly to San Juan Capistrano
PHL Test Code: MSOT
EPIC Test Code:
Send Out Test Code: 14461
Alternate Test Names: Factor Testing
Included Tests:  
CPT Coding: 85290

Go back to the top of the page.