Heparin Assay - LMWH Anti-Xa

Message

Performed in the Coagulation Dept.
Performed at BUMCT for BUMCS
Perfromed at WyMCC, BTMC, BBMC and BDMC
Performed at BUMCP, for remaining AZ locations
All remaining AZ Locations: If Ordered ES or ST then send via ST Courier to BUMCP

Test Code

LMWH

Alias/See Also

Heparin Concentration LMW
Heparin Assay Anti Xa LMW
Low Molecular Weight Heparin Assay

Preferred Specimen

3.2% sodium citrate - blue top tube

Instructions

Note: All sites sending to BUMCP and BDMC must separate plasma and freeze before sending out. The light blue capped tubes, containing 3.2% buffered sodium citrate, used for coagulation testing must be allowed to fill completely (after filling a small air space will normally be present). We cannot accept a short filled tube.

Transport Temperature

Frozen

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Clotted
Serum received instead of Sodium Citrate plasma
Specimen past stability
Frozen plasma received thawed
Underfilled or Overfilled, blood/anticoagulant ratio must be 9/1; Specimens must be between 90% -110% full
Collected in a 3.8% Sodium Citrate tube instead of 3.2% Sodium Citrate tube
Drawn in outdated/expired tube
Hemolyzed, icteric, or lipemic sample

Setup Schedule

Resulted within 2 hours or receipt at BUMCP

Reference Range

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.