GFAP and Alzheimer disease: The density plots to discriminate DLB from AD or from controls visualize poorer discriminative accuracy for the biomarker panel P‐tau181, GFAP, and age‐corrected NfL when interpreted in aggregation, with greater proportions of individuals with probabilities falling into the undetermined/intermediate likelihood group (62% and 56%, respectively), and with more individuals that are incorrectly diagnosed within the low (41% and 15%, respectively) and high likelihood groups (12% and 29%, respectively).