Brain Health

The Brain Health category includes biomarkers that evaluate cognitive function, neurological integrity, and the risk of neurodegenerative conditions such as Alzheimer’s disease, Parkinson’s disease, and other forms of dementia. These tests provide valuable insights into the health and resilience of the central nervous system (CNS), allowing for early detection of brain-related disorders, monitoring of disease progression, and guidance for personalized interventions.

Whether you're noticing changes in memory or mental clarity, managing a known neurological condition, or proactively tracking your brain function over time, these biomarkers help you understand key aspects of brain performance, neuronal health, and long-term cognitive risk. They support targeted strategies for cognitive preservation, mental performance optimization, and early intervention when needed.

Biomarkers included in this panel:

ABETA 42/40 RATIO

The Aβ42/40 Ratio (Amyloid Beta 42/40 Ratio) is a biomarker that helps detect early signs of Alzheimer’s disease by measuring the balance between two key amyloid beta proteins in the blood or cerebrospinal fluid. A lower ratio indicates a

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Neurofilament Light Chain (NfL)

Serum

Neurofilament proteins are vital structural components of nerve cells, helping to maintain their shape and function. Of these, neurofilament light chain (NfL) has emerged as a clinically important biomarker. When neurons are damaged or unde

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Quest AD-Detect® Phosphorylated tau217 (p-tau217), Plasma

Plasma

This test measures levels of phosphorylated tau217 (p-tau217) in the blood—a protein strongly linked to the development of Alzheimer’s disease and other neurodegenerative conditions. Tau proteins normally help stabilize nerve cells in the

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Brain Health

Biomarkers included in this panel:

ABETA 42/40 RATIO

Neurofilament Light Chain (NfL)

Quest AD-Detect® Phosphorylated tau217 (p-tau217), Plasma

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