ATN Profile for Neurologists

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 disease progression. A ratio below the cutoff is consistent with the presence of amyloid 42 plaques.

This test detects and quantifies pTau181 proteins, which provide evidence of Alzheimer's related tau pathology.

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