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Alzheimer's Disease

Frequently Asked Questions

20. How is Alzheimer's disease diagnosed?

At specialized centers, doctors can diagnose "possible" or "probable" Alzheimer's disease correctly up to 90 percent of the time. Doctors use several tools to diagnose "probable" Alzheimer's disease. These tools include a complete medical history and tests that measure memory, problem solving, attention, counting, and language abilities. Medical tests such as analysis of blood, urine, or spinal fluid are used to determine if the dementia has another cause.

Diagnosing Alzheimer's Disease

"Diagnosing Alzheimer's Disease" [2 min 31 sec]

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