Factor X Activity, Chromogenic [10663X]

Test Code

CPT Codes

Preferred Specimen
1 mL plasma collected in 3.2% sodium citrate (light-blue top) tube

Minimum Volume
0.5 mL

Transport Temperature

Specimen Stability
Room temperature: 2 hours
Refrigerated: 8 hours
Frozen: 21 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Received refrigerated


Setup Schedule
Set up: Mon-Sat a.m.; Report available: 2-4 days

Reference Range
73-158 % activitiy

Clinical Significance
For lupus anticoagulant on coumadin (Warfarin) whereby thn INR fails to give accurate measure of anticoagulant intensity

Performing Laboratory
Quest Diagnostics Nichols Institute San Juan Capistrano
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130

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.