Factor 10, Chromogenic


Sunquest Code:F10CH  
Epic Code:LAB758Epic Name:Factor 10 Chromogenic
Synonyms:Factor 10, Chromogenic; Factor X Chromogenic
Methodology:Chromogenic (synthetic substrate) activity assay
CPT Code:85260
Turnaround Time:Turnaround time is 4-8 hours if received during lab hours (see Associated Link). With pre-notification, stats are done within 1 hour after receipt in the laboratory.
Associated Links:

Specimen Collection and Processing for Coagulation Specimens



Collection Instructions

Specimen:Blood
Optimal Volume:2.7 mL (in 3 mL tube) - filled to fill line on the tube.
Minimum\Peds Volume:1.8 mL (in 2 mL tube) - filled to fill line on the tube.
Collection Instructions:See link to Specimen Collection and Processing for Coagulation Specimens.
Causes for Rejection:Underfilled tube or clotted specimens.


Processing and Shipping

Specimen Processing:See link to Specimen Collection and Processing for Coagulation Specimens.
Shipping Instructions:See link to Specimen Collection and Processing for Coagulation Specimens.
Test Performed at or Referral Lab Special Coagulation  (UMMC-East Bank)


Interpretive

Critical Range:Less than 10%
Reference Range:70-130%
Therapeutic Range:A chromogenic factor 10 level of approximately 20 to 40 percent inversely correlates with an INR of 2 to 3 for patients receiving warfarin. Chromogenic factor 10 levels below 20 percent indicate an INR greater than 3, and levels above 40 percent indicate an INR less than 2.
Use:This test may be used to monitor warfarin therapy for patients with lupus anticoagulants.


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