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FDA approves blood test to help rule out Alzheimer’s in patients with cognitive symptoms.
The FDA has approved the Elecsys pTau181 blood test, developed by Roche and Eli Lilly, to help rule out Alzheimer’s disease in adults showing cognitive symptoms.
The test measures a protein linked to Alzheimer’s and showed 97.9% accuracy in identifying those without the condition in a study of 312 participants.
It is not a standalone diagnostic tool but part of a broader evaluation, with negative results suggesting alternative causes and positive results prompting further testing.
Experts caution against overreliance due to potential false positives and stress that clinical judgment remains essential.
The approval marks progress in early detection, potentially reducing the need for invasive procedures and improving access to care.
La FDA aprueba un análisis de sangre para ayudar a descartar la enfermedad de Alzheimer en pacientes con síntomas cognitivos.