Accessibility StatementSkip Navigation Beckman Coulter Also Announces Development of Aß-42 Research Use Only Immunoassay Test BREA, Calif., Sept. 10, 2025 /PRNewswire/ --Â Beckman Coulter Diagnostics, a Danaher company and a leader in global clinical diagnostics innovation, today launched the industry's first fully automated Brain- derived Tau (BD-Tau) research use only (RUO) immunoassay test. Access BD-Tau, along with Beckman Coulter Diagnostics' expanding portfolio of neurodegenerative disease RUO assays, ...