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Weather alert

Due to winter storm Fern, our Patient Service Centers in affected areas may be closed. We ask that patients please double check your appointment status to ensure your designated Patient Service Center is operational. For site-specific information, please use Find a location and enter your zip code.

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Cerebrospinal Fluid Aβ42, Total Tau, and Phosphorylated Tau in the Evaluation of Alzheimer’s Dementia: Experience From a Commercial Reference Laboratory