Anti Xa Assay (Heparin Assay)
Investigation : Anti Xa Assay (Heparin Assay)
Spec container : Citrate 
Volume required : 3.5 ml
Reference range : See below

Prophylactic = 0.15-0.40 U/mL
Therapeutic = 0.5 - 1.2 U/mL

Sample Requirements

The sample should be taken 4 hours post dose.
The samples must be correctly filled as the ratio of anticoagulant to blood is crucial for accurate tests results. The sample must be received within the laboratory within 4 hours of collection. If the sample cannot reach the laboratory within 4 hours the sample must be centrifuged (3000g for 10 minutes) and separated and frozen


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