Factor XIII, Functional : 14461

Message
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Test Code
F13FQ or 14461

Alias/See Also
Factor Testing, Factor XIII Activity, Factor XIII Inhibitor, Functional, Fibrin Stabilizing Factor

CPT Codes
85290

Instructions
Light Blue top 3.2% sodium citrate tube.

Transport Container
Centrifuge light blue-top tube 15 minutes at approx. 1500 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 1 mL (Min: 0.3 mL) platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcl).  Freeze immediately

Transport Temperature
Frozen.

Specimen Stability
After separation from cells: Room temperature: 24 hours; Refrigerated: 24 hours; Frozen: 14 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Thawed plasma.

Methodology
Chromogenic

Setup Schedule
Thursday

Report Available
2-9 days  (From receipt at performing laboratory)

Limitations
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.

Reference Range
57-192 % activity

Clinical Significance
Low Factor XIII levels, i.e., <15%, may cause a bleeding disorder and levels <2% have been associated with spontaneous intracranial hemorrhage.

Performing Laboratory
Quest Diagnostics



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.