By James Gallagher -
Researchers believe they are closer to developing a blood test that could diagnose Alzheimer's.
There is no definitive test for the brain-wasting disease. Doctors rely on cognition tests and brain scans.
A technique published in the journal Genome Biology showed differences in the tiny fragments of genetic material floating in the blood could be used to identify patients.
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Advances allow new test for Alzheimer's to achieve 93% accuracy
