Clinical Performance Evaluation of Native Whole Blood Samples of Patients on DOACs With the Perosphere ClotChek™

Inclusion Criteria: * Be informed of the nature of the study and provide written informed consent before any study-specific procedures are performed. * Be 18- to 80-years-of-age, inclusive, at time of consent. * Have suitable venous access for at least a single venipuncture. * Eligible patients on anticoagulants must have taken their prescribed anticoagulant regularly at least for one month prior to study participation for inclusion * Eligible patients on anticoagulants must have been on their anticoagulant therapy for at least one month. Exclusion Criteria: * Have a personal or family history of clotting disorder or hematologic abnormality, such as excessive bleeding, joint hematoma, thrombovascular disease, thrombocytopenia, or any chronic condition requiring treatment with transfusions, other than the condition for which a DOAC was prescribed. * Have a history of unexplained syncope. * Have a history within six months prior to Screening of peptic ulcer or gastrointestinal bleeding (including hematemesis, melena, or rectal bleeding). * Consume more than five cigarettes per day. * If female, have a history of excessive or dysfunctional uterine bleeding (unless the subject had a subsequent hysterectomy). * If female, be pregnant, breastfeeding, or planning to become pregnant during the study.