The US Food and Drug Administration has authorized a blood test to help identify signs of Alzheimer's disease. The test, Elecsys pTau217, is a blood biomarker analysis that can aid doctors in identifying patients who may or may not have Alzheimer's-related brain changes. It is intended for individuals 55 and older with cognitive decline.

The test was previously approved in Europe in May. Over 4,500 laboratory analyzers are already installed in the US, which could help expand access to the test. Labcorp and Quest Diagnostics have announced plans, although details are not specified.

Further information on the test and its availability can be found through the source. The authorization marks a development in the detection of Alzheimer's disease, with the test potentially helping to identify signs of the condition.