Ortho Clinical Diagnostics Holdings plc engages in the vitro diagnostics business worldwide. The company offers automated instruments; and assays, reagents, and other consumables that are used by these instruments to generate test results. Its solutions include clinical chemistry and immunoassay instruments and tests to detect and monitor disease progression across a spectrum of therapeutic areas, including COVID-19 antibody and antigen tests; and immunohematology instruments and tests for blood typing to ensure patient-donor compatibility in blood transfusions, as well as donor screening instruments and tests for blood and plasma screening for infectious diseases. The company also engages in contract manufacturing activities; and provides orthocare services. Its products are used in hospitals, laboratories, clinics, blood banks, and donor centers. The company was founded in 1939 and is headquartered in Raritan, New Jersey.