If your primary care doctor recently ordered a pTau 217 blood test and your result came back positive, you may be feeling anxious, confused, or unsure of what to do next. This is completely understandable — and you are not alone. At Grove Neurology, we want to help you make sense of this result and take the right next steps with confidence.
What Is pTau 217?
pTau 217 (phosphorylated tau protein 217) is a cutting-edge blood biomarker that has emerged as one of the most promising early indicators of Alzheimer’s disease. It reflects changes in the brain’s tau protein — one of the hallmarks of Alzheimer’s pathology — and can be detected in the bloodstream years before symptoms appear.
This test has become increasingly available through primary care offices as part of routine memory screening, particularly for patients who are concerned about cognitive changes or have a family history of Alzheimer’s disease.
A Positive Result Is Not a Diagnosis
This is the most important thing to understand: a positive pTau 217 result does not mean you have Alzheimer’s disease. It is a signal — not a verdict.
A positive result indicates that there may be elevated levels of abnormal tau protein in the brain, which can be associated with early Alzheimer’s-related changes. However, many factors can influence the result, and a full evaluation by a neurologist is essential to interpret it accurately in the context of your overall health, symptoms, and history.
What Should You Do Next?
If you have received a positive pTau 217 result, the most important next step is to schedule a consultation with a neurologist who specializes in memory and cognitive disorders. Early evaluation gives us the best opportunity to:
- Confirm or rule out an Alzheimer’s-related process
- Identify other potential causes of cognitive changes
- Discuss emerging treatments that may slow disease progression
- Create a personalized plan to protect your brain health
What a Full Workup at Grove Neurology Includes
At Grove Neurology, Dr. Andrew Lerman — a double board-certified neurologist — offers a comprehensive memory and cognitive evaluation that includes:
- A detailed neurological examination and cognitive assessment
- Advanced brain imaging (MRI, and PET scan when indicated)
- Additional blood biomarker testing to complement the pTau 217 result
- Genetic counseling and testing when appropriate
- A clear, personalized plan with next steps and treatment options
Dr. Lerman stays at the forefront of Alzheimer’s research and has access to clinical trials that may offer patients options beyond standard care.
You Don’t Have to Navigate This Alone
Receiving an unexpected test result can feel overwhelming. Our team is here to guide you — with clarity, compassion, and expertise. Whether your result turns out to be a false positive or the beginning of a care journey, knowing the truth early puts you in the best possible position. Call us at 786-655-8010 or request an appointment online at groveneurology.com. We are here for you.

