Lumipulse G β-Amyloid Ratio Test for the Diagnosis of Alzheimer DiseaseLau, Kyle MDLin, Kenneth W. MD, MPHAuthor informationLancaster General Hospital Family Medicine Residency, Lancaster, PennsylvaniaAuthor disclosure: No relevant financial relationships.This series is coordinated by Natasha J. Pyzocha, DO, contributing editor.A collection of Diagnostic Tests published in AFP is available at https://www.aafp.org/afp/diagnostic.American Family Physician 107(5):p 550-551, May 2023.Copyright © 2023 American Academy of Family Physicians. All rights Reserved.