New Blood Test Shows Promise for Early Alzheimer's Detection Years Before Diagnosis

New research suggests a blood test measuring levels of the protein 'p-tau217' could help identify early signs of Alzheimer's disease. A study published earlier this month in the medical journal JAMA found that older adults with elevated p-tau217 levels in their blood had a 38% higher likelihood of developing Alzheimer's within the next five years. While the test is currently considered most beneficial for patients already experiencing cognitive symptoms to confirm a diagnosis, it could become more valuable if ongoing Alzheimer's prevention trials prove successful.