Systems and methods of the present invention provide for an olfactometer for delivering one or more odors and one or more computing devices configured to: receive user input for an odor memory test and an odor discrimination test； calculate a score for the odor memory test and the odor discrimination test； calculate a first and second confidence interval threshold and a second confidence interval threshold for a first and second predicted odor memory score respectively, based on a relationship between, respectively, the odor memory test score and odor discrimination test score, and previously-entered performance data queried from the database； and responsive to the score for the odor memory test not being greater than the first confidence interval threshold and the score for the odor discrimination test not being greater than the second confidence interval threshold, generate a report identifying a user as high risk for a neurodegenerative disease.
