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. Healthy volunteers must: Not be on medication designed to alter the coagulation state of a patient (including anticoagulants, anticoagulant reversal agents, platelet inhibitors, NSAIDs and thrombolytics or "clot buster" drugs), except as specified for phase 3 of testing. Eligible patients on anticoagulants must: Have taken their prescribed anticoagulant regularly at least for a month prior to study participation for inclusion in phase 3 of testing Eligible patients on anticoagulants must: Have been on their anticoagulant therapy for at least one month.  Exclusion Criteria:  Have any of the following findings at Study Enrollment (information will be collected via questionnaire): Positive pregnancy test (females); Drug- or alcohol abuse; Use of tobacco or nicotine-containing products within 3 months prior to screening 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. Have a history of unexplained syncope. Have a history within 6 months prior to Screening of major bleeding, trauma, surgical procedure of any type, or vaginal delivery. Have a history within 6 months prior to Screening of peptic ulcer or gastrointestinal bleeding (including hematemesis, melena, or rectal bleeding). Have received any blood product or anticoagulant within 3 months prior to Screening. Have donated blood or blood products within 3 months prior to Screening. Have a history of minor bleeding episodes (e.g., epistaxis, bruising or gingival bleeding) within 1 month prior to screening, or a long-standing history of such bleeding. 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.  Eligible patients on anticoagulants must not:  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 6 months prior to Screening of peptic ulcer or gastrointestinal bleeding (including hematemesis, melena, or rectal bleeding). Consume more than 5 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.