Fondaparinux Sodium (Xa) [16103X]

Test Code
16103

CPT Codes
80299

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

Minimum Volume
0.5 mL

Transport Container
Sterile, plastic screw-cap vial

Transport Temperature
Frozen

Specimen Stability
Room temperature: 8 hours
Refrigerated: 24 hours
Frozen: 21 days

Methodology
Anti-Xa Chromogenic

Setup Schedule
Set up: Mon-Fri a.m.; Report available: Next day

Reference Range
Not applicable

Clinical Significance
Anti-Xa agents exerts their anticoagulant activity predominantly by greatly increasing the activity of plasma antithrombin III (ATIII). Enhancement of antithrombin III increases it F Xa inhibition activity, which is used to assess the anticoagulant activity o anti Xa agents. The chromogenic anti-Xa method is the assay of choice for determining the plasma concentration of Arixtra against calibration curve prepared from Arixtra.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153




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.