Bluejay Diagnostics, Inc. operates as a medical diagnostics company. The company offers Symphony platform, a technology platform comprising Symphony analyzer that orchestrates whole blood processing, biomarker isolation, and immunoassay preparation using non-contact centrifugal force; and Symphony Cartridge, which includes reagents and components. It also provides ALLEREYE diagnostic test, a point-of-care device for the diagnosis of allergic conjunctivitis. In addition, the company develops Symphony IL-6 test for the monitoring of disease progression in critical care settings. Further, it develops cardiac biomarkers, such as hsTNT and NT pro-BNP, as well as other tests using the Symphony platform. The company was incorporated in 2015 and is headquartered in Acton, Massachusetts.