Unfractionated Heparin Anti Xa

Test Code
UFH ANTI-XA


Alias/See Also
  • Anti Heparin(Unfractionated Heparin)
  • Hematology


Preferred Specimen
Light Blue Top Tube – 3.2% sodium citrate


Instructions
Bring to Laboratory Immediately.


Transport Temperature
Room Temperature
 


Specimen Stability
1 hour – bring to lab immediately


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Under Drawn or overdrawn, and clotted specimens are not acceptable for testing.


Methodology
One stage, Chromogenic Assay

Setup Schedule
Daily


Report Available
1 hour


Reference Range
Reference Range:
0.3 - 0.7 IU/mL
 


Clinical Significance
Test for Monitoring Heparin Therapy. Do not order on patients not on heparin therapy.


Performing Laboratory
Test performed in BACL Hematology Labs
Contact Nolan Raymond - West Roxbury 857-203-5980

 


Last Updated: May 19, 2025


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.