Accuracy of the STA®-Liquid anti-Xa assay in clinical practice: results from a large cross-sectional study in Switzerland

Objective Rapid and accurate measurement of direct oral anticoagulant drug level is critical in emergency situations. The diagnostic performance of anti-Xa assays in routine clinical practice is however not well established. We aimed to study the accuracy of the STA®-Liquid anti-Xa assay for the determination of rivaroxaban, apixaban, and edoxban in a large prospective cross-sectional study in clinical practice.