Aβ	Amyloid beta
AD	Alzheimer’s disease
ADRDA	Alzheimer’s Disease and Related Disorders Association
AMSTAR	A Measurement Tool to Assess Systematic Reviews
CU	Cognitively unimpaired
DSM	Diagnostic and Statistical Manual of Mental Disorders
ECL	Electrochemiluminescence
ICD	International Classification of Diseases
IMR	Immunomagnetic reduction
LC-MS	Liquid Chromatography–Mass Spectrometry
MCI	Mild cognitive impairment
MSD	Meso Scale Discovery
NIA-AA	National Institute on Aging—Alzheimer’s Association
NINCDS	National Institute of Neurological and Communicative Diseases and Stroke
p-tau	Phosphorylated tau
QUADAS	Quality Assessment of Diagnostic Accuracy Studies
Simoa	Single Molecule Array
STARD	Standards for Reporting Diagnostic Accuracy
t-tau	Total tau