Researchers warn social media driving harmful misuse of Alzheimer’s blood tests

Exclusive: Screening if used alone risks leading people to believe they are inevitably going to develop dementia Researchers have warned that social media may be misleading healthy people into taking Alzheimer’s blood tests, causing severe anxiety over biological markers that may never actually cause dementia. Blood-based biomarker tests, including p-tau217 and p-tau181, detect biological signs of changes in the brain associated with Alzheimer’s disease, which is a progressive brain disorder and the leading cause of dementia.