Guidelines for the standardization of pre-analytical variables for salivary biomarker studies in Alzheimer’s disease research: An updated review and consensus of the Salivary Biomarkers for Dementia Research Working Group Ng, Ted Kheng Siang Olvera-Rojas, Marcos Solís Urra, Patricio Esteban Cornejo, Irene ISTAART-BBB-PIA-SWG Alzheimer’s disease Biomarkers Measurement protocol Non-invasive Pre-analytical variables There is a pressing need for accessible biomarkers with high diagnostic accuracy for Alzheimer's disease (AD) diagnosis to facilitate widespread screening, particularly in underserved groups. Saliva is an emerging specimen for measuring AD biomarkers, with distinct contexts of use that could complement blood and cerebrospinal fluid and detect various analytes. An interdisciplinary, international group of AD and related dementias (ADRD) researchers convened and performed a narrative review of published studies on salivary AD biomarkers. We critically appraised the current state of the literature, examining both consistencies and discrepancies in existing pre-analytical variables and methodologies. We discussed how various pre-analytical variables could influence the detection and quantification of salivary biomarkers, showed technologies available to standardize collection procedures, and proposed a standardized pre-analytical protocol to guide future studies on salivary AD biomarker examinations. We identified potential contexts of use, gaps, and priorities and proposed future research directions. 2025-02-20T08:13:39Z 2025-02-20T08:13:39Z 2024-12-30 journal article Ng TKS, Udeh-Momoh C, Lim M-A, et al. Guidelines for the standardization of pre-analytical variables for salivary biomarker studies in Alzheimer’s disease research: An updated review and consensus of the Salivary Biomarkers for Dementia Research Working Group. Alzheimer’s Dement. 2024;1-34. https://doi.org/10.1002/alz.14420 https://hdl.handle.net/10481/102531 10.1002/alz.14420 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Wiley