Alzheimer’s Biomarker Testing

by Jason Eastty

on May 26, 2025

Medically Reviewed By Dr. Paul Currier

Schedule Your Alzheimer’s Biomarker Test Today.

Alzheimer’s disease often begins decades before symptoms arise. Our Alzheimer’s Biomarker Test measures p‑tau217 in blood a biomarker that closely tracks early Alzheimer’s pathology. This test is not diagnostic. A positive result indicates the need for further evaluation and does not confirm Alzheimer’s.

What Is the Alzheimer’s Biomarker Test?


A routine blood draw is used to measure phosphorylated tau at threonine 217 (p‑tau217), a highly specific marker for Alzheimer’s. Elevated p‑tau217 levels correlate with tau tangle accumulation in the brain, often appearing years before noticeable symptoms.

Why p‑tau217 Matters


Among current blood‑based biomarkers, p‑tau217 has the highest specificity and sensitivity for early Alzheimer’s detection. It closely aligns with amyloid and tau PET imaging and effectively differentiates Alzheimer’s from other neurodegenerative conditions.

What Can the Test Tell You?


• Your plasma p‑tau217 level
• Risk assessment based on the latest clinical thresholds
• Personalized recommendations for further evaluation or preventive strategies
• A baseline to monitor long‑term cognitive health

Who Should Consider the Test?


This test is ideal for individuals who:
• Are aged 50 or older and proactive about brain health
• Have a family history of Alzheimer’s
• Are noticing subtle cognitive or memory changes
• Have risk factors like head injury or long COVID
• Want a biomarker baseline before symptoms emerge

How the Test Works


We draw a small blood sample at our clinic and submit it to a lab where they use a validated immunoassay to quantify p‑tau217. Your results are reviewed by our clinical team, who provide a clear interpretation and action plan tailored to your health profile.

How to Prepare
• Fast for at least 8 hours unless advised otherwise
• Avoid strenuous exercise 24 hours before the test
• Inform us about all current medications and supplements

Frequently Asked Questions

Is this test diagnostic for Alzheimer’s?
No. It assesses biomarker‑based risk. A positive result suggests possible Alzheimer’s‑related changes and warrants further evaluation.

How accurate is p‑tau217?


Extremely accurate. Peer‑reviewed studies show p‑tau217 matches or surpasses cerebrospinal fluid tests and PET imaging:
– A JAMA Neurology study found the plasma p‑tau217 assay had diagnostic accuracy nearly equal to CSF biomarker tests for detecting amyloid pathology.
– A large cohort study showed p‑tau217 differentiated Alzheimer’s from other neurodegenerative diseases with an AUC of 0.96.
– A Nature Medicine paper confirmed that plasma p‑tau217 closely predicted future cognitive decline, aligning with tau‑PET findings.

Can I act on elevated results?


Yes. Elevated p‑tau217 levels support early lifestyle interventions such as optimizing sleep, cardiovascular health, metabolic function, exercise and anti‑inflammatory nutrition all validated in RCTs to support brain health.

Do I need a referral?


No. You can book the test directly with us.

Act Early, Understand Your Risk

Our p‑tau217 Alzheimer’s Biomarker Test offers a non‑invasive, science‑backed window into brain health—years before symptoms take hold.

Schedule Your Alzheimer’s Biomarker Test Today.

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