ROCKVILLE, Md. – (BUSINESS WIRE)–SYNAPS Dx (SDx), a privately held company focused on the research, development and commercialization of diagnostics for neurodegenerative disorders and conditions, including Alzheimer’s Disease (AD), announces that DISCERN™, the first autopsy-validated, highly accurate, minimally invasive test for the definitive diagnosis of AD versus other forms of non-AD dementias.