MIXING STUDIES - APTT
*Fibrinogen*Thrombin Time*APTT *Mixing studies
6 mL Whole blood in 2 Blue Top (Sodium Citrate) tubes. Mix thoroughly by inversion. Transport to Lab within 4 hrs. If this is not possible, make PPP within 1 hour of collection. FREEZE IMMEDIATELY. Ship frozen. DO NOT THAW. Overnight fasting is preferred. Duly filled Coagulation Requisition Form is mandatory.
Photo-optical Clot Detection
Sample by 1pm Report Next Day
Report Next Day Evening
It is recommended that patient discontinues Heparin for 1 day and Oral Anticoagulants for 7 days prior to sampling as these drugs may affect test results. Discontinuation should be with prior consent from the treating Physician.