The most common discordant pattern was a high aPTT value relative to the anti-Xa value. While the work of Kearon and colleagues [2] demonstrated that warfarin increases the sensitivity of the aPTT ...
Results: A total of 2321 paired values from 539 patients were studied; 42% of data pairs had a high aPTT value relative to the anti-Xa value. Patients with elevated baseline prothrombin time ...