Nation Scientists are studying blood tests for dementia: ‘A new era of diagnosis for Alzheimer’s disease’ April 26, 2022April 27, 2022Ken Alltucker, USA TODAYComments Off on Scientists are studying blood tests for dementia: ‘A new era of diagnosis for Alzheimer’s disease’ More than a half dozen blood tests are being developed and tested to detect signs of Alzheimer's disease in older patients.