Genetic tests aren't typically used in clinics for diagnosing or predicting Alzheimer's risk. However, if someone exhibits early symptoms and has a strong family history, a specialist might order tests for APP, PSEN1, and PSEN2. APOE testing, while available, doesn't definitively predict Alzheimer's development. It's mainly utilized in research to identify participants with elevated risk, aiding in early brain change detection and treatment comparison.