Enoxaparin Assay (Anti Xa)
Label Mnemonic: ENOX
Epic Lab Code: LAB316
Downtime Form: A-1a Miscellaneous Request
Hemostasis/Thrombosis
6240 RCP
356-3573
Specimen(s):
Citrated Plasma More information
Collection Medium:
Light Blue top tube 1.8 mL (Na Citrate)
Minimum:
Draw ONE 1.8 mL in light blue-top (3.2% sodium citrate) tube.

0.5 mL platelet poor plasma needed for testing.
Delivery Instructions:
Deliver to laboratory within 2 hours of collection.
Testing Schedule:
0800-1630 Monday through Friday. For additional services, contact Clinical Pathology Resident on-call at pager #3404.
Reference Range:
The therapeutic range for low molecular weight heparins varies with the type and manufacturer, but is typically between 0.4 and 1.1 IU/mL.
Comments:
Patient medications must be recorded on the laboratory requisition.
Test Limitations:
Double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results.
Methodology:
Chromogenic method
CPT Code:
85520
 
See Additional Information:
Hemolysis Chart