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Test Code LAB316 Heparin Anti-Xa (Low Molecular Weight)

Intended Use

Heparin Anti-Xa is used to measure heparin concentrations in patients receiving low molecular weight heparin (LMWH)

Methodology

One-stage, Chromogenic assay

Performing Laboratory

RCH-SPH

Specimen Requirements

Required: Platelet-poor plasma (sodium citrate)

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

Submission Container/Tube: Plastic vial

Specimen Volume: 1.0 mL (minimum volume 0.5 mL)

Collection Instructions: Spin down, remove plasma and spin plasma again. Hemolyzed samples with be rejected. Forward promptly.

Additional Information: Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.

 

Specimen Stability

Ambient: 2 hours

Frozen (Preferred): -20°C for 14 days

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

85520