Blood test could detect Alzheimer’s before symptoms appear

(Tim Newman/ Medical News Today) — A group of researchers is close to developing a blood test that can detect Alzheimer’s disease long before symptoms appear. The test will be extremely useful for scientists trying to understand and treat the condition.

One of the major issues that hamper Alzheimer’s research is that the disease is always caught at a relatively late stage. This is because symptoms develop slowly over a number of years; they become obvious long after the condition has made changes in the brain.

As it stands, there are no simple ways to detect whether Alzheimer’s disease is developing in an individual. The only reliable methods of diagnosis are positron emission tomography (PET) brain scans, which are time-consuming and expensive, and the analysis of cerebrospinal fluid (CSF) collected by a lumbar puncture, which is painful and invasive.

A study, published in the journal EMBO Molecular Medicine, describes a potential solution to this significant problem. (…)

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