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HelpTest Code ANTIXA Anti Xa
Additional Codes
| Epic EAP |
|---|
| LAB2513 HEPARIN ANTI XA ASSAY |
Performing Laboratory
Unity Point-Sioux City-Hematology
CPT
85520
Specimen Type
Sodium Citrate Plasma
Specimen Required
Specimen Type: Platelet-poor plasma
Collection Container/Tube: Light-blue top (3.2% sodium citrate)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Spin down, remove plasma and spin plasma again
Additional Information: Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.
Rejected if:
Greater than 2 hours if plasma not frozen
Stability
|
Specimen Type |
Temperature |
Time |
|
Plasma Na Cit |
Frozen (preferred) |
14 days |
|
|
Ambient |
2 hours |
Useful For
Measuring heparin concentration:
-In patients treated with low-molecular-weight heparin preparations
-In the presence of prolonged baseline activated partial thromboplastin time (APTT) (eg, lupus anticoagulant, "contact factor" deficiency, etc)
-When unfractionated heparin dose needed to achieve desired APTT prolongation is unexpectedly higher (>50%) than expected