Diagnostic Accuracy of Anti-factor Xa Activity, PT, and APTT for Clinically Relevant Rivaroxaban Levels in Older AF Patients

Qiang Zhao, Guoquan Chen, Haiping Wang, Jiale Chen, Xianqing Hu, Department of Cardiovascular Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Zhejiang Province, Department of Pharmacy, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Zhejiang Province, Department of Pharmacy, Longyan Second Hospital, Fujian Province

Clinical and Applied Thrombosis/Hemostasis

Published online on July 14, 2026

Abstract

Clinical and Applied Thrombosis/Hemostasis, Volume 32, January-December 2026.
BackgroundRapid assessment of rivaroxaban exposure is clinically critical for older patients with atrial fibrillation in scenarios such as acute bleeding, urgent invasive procedures, or thrombolysis decision-making. This study evaluated rivaroxaban-...