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Apr 5, 2015

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Factor X Chromogenic Activity, Vitamin K Antagonist Therapy

Factor X Chromogenic Activity, Vitamin K Antagonist Therapy (RMISC) Ref Lab- Miscellaneous Lab Test

Name: Factor X Chromogenic Activity, Vitamin K Antagonist Therapy

Test Name: Factor X Chromogenic Activity, Vitamin K Antagonist Therapy

Health Link Test Code: RMISC

LIS Test Code: MISC

Testing Site: Testing will be sent to an approved reference laboratory

In-Lab Turnaround Time: 3 - 7 days.

Specimen: Blood

Collection Container: Light blue top (3.2% NaCitrate)

Collection Instructions:

Please indicate if patient is receiving anticoagulant (Warfarin/Heparin/Vitamin K antagonist), direct thrombin inhibitor or fibrinolytic agent therapy.

Collection Volume: 4 mL

Pediatric Collection Volume: 1.5 mL

Sample Analyzed: Plasma

Testing Volume: 1 mL

Pediatric Testing Volume: 0.5 mL

Specimen Processing:

Centrifuge specimen to yield platelet poor plasma/serum (platelet count should be less than 10 K/µL). Separate plasma/serum and transfer to plastic tube or vial. Freeze plasma/serum at -20°C or below.

Outreach Specimen Processing:

Transport frozen aliquot on dry ice to UWHC Hospital Laboratory.

Specimen Transport:

Transport whole blood specimen at room temperature to laboratory within 4 hours of collection. See Specimen Processing for instructions if transport criteria are not met.

Unacceptable Criteria:

Hemolyzed specimens, clotted specimens, partially filled tubes and whole blood specimens greater than 4 hours old when received by the laboratory are not acceptable.