(CNN) — Testing a person’s blood for a type of protein called phosphorylated tau, or p-tau, could be used to screen for Alzheimer’s disease with “high<a class="excerpt-read-more" href="https://whdh.com/news/new-blood-test-that-screens-for-alzheimers-may-be-a-step-closer-to-reality-study-suggests/">Read More</a>