COAGULATION FACTOR X CHROMOGENIC ACTIVITY ASSAY PLASMA
General Information
HLAB/HOL Code: FXCH
UPHSM LIS Test #: 026838
Schedule:
Testing Time: 1-3 Days
Testing Lab: Mayo Labs
UPHSM LIS Test #: 026838
Schedule:
Testing Time: 1-3 Days
Testing Lab: Mayo Labs
Specimen Info
Only 1 specimen type required, unless otherwise specified
Volume: 1.0 mL
Temperature: Frozen
Tube Type: Platelet Poor Plasma (sodium citrate)
Collection Info:
Patient Preparation: Fasting preferred
Collection Container/Tube: Light-blue top (citrate)
Submission Container/Tube: Polypropylene vial
Specimen Volume: 1 mL
Collection Instructions:
1. Spin down, remove plasma, and spin plasma again.
2. Freeze plasma immediately (no longer than 4 hours after collection) at -20 degrees C or, ideally, < or =-40 degrees C.
Additional Information:
1. Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.
2. Each coagulation assay requested should have its own vial.
3. If priority specimen, mark request form, give reason, and request a call-back.
Temperature: Frozen
Tube Type: Platelet Poor Plasma (sodium citrate)
Collection Info:
Patient Preparation: Fasting preferred
Collection Container/Tube: Light-blue top (citrate)
Submission Container/Tube: Polypropylene vial
Specimen Volume: 1 mL
Collection Instructions:
1. Spin down, remove plasma, and spin plasma again.
2. Freeze plasma immediately (no longer than 4 hours after collection) at -20 degrees C or, ideally, < or =-40 degrees C.
Additional Information:
1. Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.
2. Each coagulation assay requested should have its own vial.
3. If priority specimen, mark request form, give reason, and request a call-back.
Specimen Acceptability
REJECT DUE TO:
Gross hemolysis: Reject
Gross lipemia: Reject
Gross icterus: Reject
Gross hemolysis: Reject
Gross lipemia: Reject
Gross icterus: Reject
Methods
Chromogenic
Clinical Utilities
Monitoring warfarin anticoagulant therapy, especially in patients whose plasma contains lupus anticoagulants that interfere with baseline prothrombin time/international normalized ratio and in patients receiving the drug Argatroban who are being transitioned to warfarin
This assay should not be used for monitoring heparin, or oral direct factor Xa inhibitors such as rivaroxaban (Xarelto), apixaban (Eliquis), or edoxaban (Savaysa).
This assay should not be used for monitoring heparin, or oral direct factor Xa inhibitors such as rivaroxaban (Xarelto), apixaban (Eliquis), or edoxaban (Savaysa).
CPT Codes
85260
* The CPT codes provided 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 payer being billed.
Reference Range
> or =18 years of age: 60%-140%
