Labcorp is proud to offer the broadest blood-based biomarker portfolio for Alzheimer’s disease and dementia

Each of the Alzheimer’s biomarker tests are orderable individually


Phosphorylated Tau 217 (pTau-217), Plasma

An aid in the identification of Alzheimer's disease pathology by detecting the presence or absence of pTau-217, which has been shown in the literature to be a surrogate of amyloid pathology. Additionally, pTau-217 can be used for monitoring patients on newly approved anti-amyloid therapies


Beta Amyloid 42/40 Ratio, Plasma

Labcorp’s Beta-Amyloid 42/40 Ratio test quantifies the amount of beta-amyloid 42 and 40 proteins in a plasma patient sample and computes the ratio of those proteins, providing an indication of amyloid pathology for Alzheimer’s disease


Glial Fibrillary Acidic Protein (GFAP)

GFAP is a protein expressed mostly in astrocytes in the brain. In conjunction with markers of amyloid pathology, GFAP has been shown to be a predictor of Alzheimer’s disease


Neurofilament Light Chain, Plasma

NfL, in the context of Alzheimer’s disease, provides an indication of disease severity by measuring the current level of neurodegeneration


Phosphorylated Tau 181 (pTau-181), Plasma

This test detects and quantifies pTau-181 proteins in plasma, which has been demonstrated to be predictive in differentiating Alzheimer’s from other dementias


ATN Profile

This profile is used to assist in determining the presence or absence of key biological changes that are consistent with Alzheimer's disease pathology

Labcorp offers neurological biomarkers for Biopharma


  1. Alzheimer’s Association.
  2. Anderson LA, Day KL, Beard RL, “The Public's Perceptions About Cognitive Health and Alzheimer's Disease Among the U.S. Population: A National Review”. The Gerontologist. 2009; 49(S1): S3–S11.

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