Prothrombin Time PT and Partial Thromboplastin Time PTT Labcorp
This aPTT test is for screening purposes only and is not intended for therapeutic monitoring Please refer to Heparin Anti Xa [117101] and thrombin inhibitors etc for aPTT testing If the patient s hematocrit exceeds 55% the volume of citrate in the collection tube must be adjusted Refer Coagulation Collection Procedures for directions