If both the PTT and aPTT tests yield abnormal results, it is suggested the patient has a deficiency of factor I, V, X, or II. A normal PTT with an abnormal aPTT result suggests the patient has a ...
Reports associated with inappropriate use of anticoagulants were the only cases that frequently listed abnormal laboratory values (elevated activated partial thromboplastin time [aPTT] or INR ...
Thrombin time, measured in 8 patients, was abnormal in 7. Less frequent abnormalities were noted for each of the other coagulation studies performed. Six hundred to 1800 ml. (3 to 9 units ...