AD biomarkers

AD biomarkers are measurable signs in the body that indicate the presence or risk of Alzheimer's disease. They include abnormal levels of certain proteins, like amyloid-beta and tau, in the brain or in fluids such as cerebrospinal fluid and blood. These biomarkers help doctors detect Alzheimer's earlier, understand disease progression, and evaluate treatment responses. They are essential tools for advancing diagnosis and research, providing biological evidence of the disease process even before symptoms become apparent.