Sign in →

Test Code UFHA Heparin Anti-Xa Assay, Unfractionated Heparin, Plasma

Important Note

  • MUST be drawn at the Outpatient Lab at the Main Hospital if ordered on an Outpatient
  • Specimen must be sent to lab immediately after draw
  • Specimen must be centrifuged within 1 hour of collection
  • Specimen must be tested within 2 hours of collection

Methodology

Chromogenic Method on STA Compact

Useful for monitoring unfractionated heparin therapy.

Specimen Requirements

Specimen must arrive within 1 hour 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

Reference range may change annually. Please refer to report for appropriate range.

Therapeutic range: 0.3-0.7 IU/mL

Critical value (automatic call-back): >0.7 IU/mL

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