The technology used in the A&D UA-774, to measure blood pressure, has passed in a validation study, in a general population, according to a recognised standard protocol, as published in a peer-reviewed publication.
Verdecchia P, Angeli F, Poeta F, Reboldi GP, Borgioni C, Pittavini L, Porcellati C. Validation of the A&D UA-774 (UA-767Plus) device for self-measurement of blood pressure. Blood Press Monit. 2004 Aug;9(4):225-9. PMID: 15311150.
BHS:1993 - Pass (A/A) General population