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Laboratory Medicine

Test Directory / Anti-Xa Assay (Fondaparinux)

Anti-Xa Assay (Fondaparinux)

Citrate Plasma

TestAnti-Xa Assay (Fondaparinux)
Common Abbreviations
ProfileCoagulation Screen added on the same sample
Clinical IndicationMonitoring may be required if overdosed, compliance or prior surgery. Fondaparinux is a synthetic alternative to other therapies.
Specimen TypeBlood
Sample TypeCitrate plasma
Minimum Volume2 x 3mL (adult) 2 x 1mL (paed) (citrated plasma must be filled to bottle line)
Special PrecautionsMust state the type of anticoagulant on form and time sample taken post dose
Stability4 hours
Turnaround TimeSame day (urgent) 14 days (routine)
LaboratoryRoyal Hallamshire Hospital, Sheffield
Reference IntervalNot Applicable
LimitationsHaemolysis, gross lipaemia, high haematocrit may interfere with measurement. Over or under filled samples cannot be used due to ratio between blood and citrate
Additional Information
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