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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
HEPARIN ANTI-Xa Plasma
MessagePatient must come to Augusta Health Main Lab in Fishersville, VA for specimen collection.
Test Code
HAXA
CPT Codes
85520
Preferred Specimen
Light Blue Top Tube
Minimum Volume
Tube must be full.
Specimen Stability
2 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, short draw tubes, clotted specimens. Ultracentrifuge grossly lipemic samples.
Limitations
Not routinely recommended for assessing prophylactic therapy. Clinicians should check with pharmacy for therapeutic range if using this assay to assess Dalteparin (Fragmin) level. This assay cannot be used for monitoring Arixtra (Fondaparinux), Danaparoid, or direct thrombin inhibitors (Dabigatran, Rivaroxaban, or Argatroban).
Clinical Significance
Automated chromogenic assay for the quantitative determination of unfractionated heparin and low molecular weight heparin in human citrated plasma. Heparin is the most frequently used antithrombotic drug. The biological activity of the sulphated glycosaminoglycan resides in its ability to accelerate the inhibitory effect of antithrombin on coagulation proteases.
