p-tau217: What the new Alzheimer’s blood test can — and can’t — do
Researchers have introduced a blood test measuring the protein p-tau217, which could enable earlier detection of Alzheimer's disease, according to a recent study published in JAMA. This test offers a less invasive alternative to traditional diagnostic methods, potentially making Alzheimer's detection faster and more accessible. While it shows high accuracy compared to other diagnostic tools, experts caution that it should complement, not replace, conventional methods like MRI scans.