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Test Code LMWH Heparin Anti-Xa, Low Molecular Weight

Important Note

  • MUST be drawn at the Outpatient Lab at the Main Hospital
  • Specimen must be sent to lab immediately after draw
  • Specimen must be centrifuged within 1 hour of collection
  • Specimen must be tested within 4 hours of collection

Methodology

Chromogenic Method on STA Compact

Useful for monitoring unfractionated heparin therapy.

Specimen Requirements

Specimen must arrive within 4 hours of draw.


Container/Tube: Light blue-top (3.2% sodium citrate) tube

Clotted blood or an insufficient specimen is not acceptable.

Specimen Volume: Full tube (90%) of plasma

Collection Instructions: Specimen must be centrifuged within 1 hour.

Avoid hemolysis.

Note:

1. Draw a discard tube prior to light blue-top (3.2% sodium citrate) tube.

2. Tube should remain stoppered.

Day(s) Test Set Up

Monday through Sunday

Reference Values

0.5 - 1.2

Test Classification and CPT Coding

85520

Performing Laboratory

Beebe Healthcare Laboratory

Performing Location

Margaret H. Rollins Laboratory

South Coastal Campus Laboratory

Specimen Transport Temperature

Refrigerate ≤4 hours