A new blood test for Alzheimer’s appears to detect the disease as many as 10 years before clinical diagnosis is possible.

The test could soon be used to identify and treat patients with Alzheimer’s earlier in their disease progression. Those people could participate in clinical trials to help find new treatments. Already, the test distinguishes between patients and healthy elderly with 100% accuracy.

The blood test is still in the early stages of development and has only been evaluated in 174 individuals, requiring a larger, long-term study before widespread use
 

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