FONDAPARINUX SODIUM (Xa INHIBITION) (ARIXTRA)

Test Documentation
Specimen Required
Draw blood in a light blue 3.2% sodium citrate tube. See appendices for coagulation test collection instructions. Send 1.0 mL plasma (0.5 mL minimum) frozen in a screw-capped plastic vial. This test is only valid for monitoring patients on Arixtra, not unfractionated heparin or low molecular weight heparin.

Methodology
Anti-Xa Chromogenic

Stability
Room Temperature: 8 hours; Refrigerated: 24 hours; Frozen: 21 days

Reference Range
By report

Performed
Monday-Friday

Turnaround Time5-7 days
Test CodeARIX
CPT-4 Code (s)
80299
LOINC Codes
49060-7

Warde
Medical
Laboratory