The final phase of the study, called the ADNI4 In-Clinic study, involves visiting a local clinical site for more in-depth tasks. The clinical sites have staff that are specially trained to study brain health, dementia, and Alzheimer’s disease. At the clinic, you will complete memory and other thinking tests with expert medical staff. You will also be asked to provide blood and urine samples for our teams to analyze, and complete brain imaging scans (such as MRI and PET) which allow us to see pictures of your brain. These tests are done at no cost to you and provide very important information to Alzheimer’s researchers.