The technology used in the Andon KD-391, 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.
Wan Y, Pan F, Liu Y, Liang Y, Yang Z, Zhao H, Xu Y. Validation of the Andon KD-391 semiautomated blood pressure monitor in adults according to the International Protocol. Blood Press Monit. 2009 Aug;14(4):181-4. doi: 10.1097/MBP.0b013e32832db4c2. PMID: 19512888.
ESH-IP:2002 - Pass General population