What's this test for?

This test is ideal if you're experiencing memory problems, confusion, or cognitive changes that concern you or your family. It measures a brain protein called p-tau217 that appears in the blood when there's damage to brain cells associated with Alzheimer's disease. Many people use this test when they want early detection of Alzheimer's risk before symptoms become severe, or when they have a family history of dementia and want to be proactive about brain health.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your p-tau217 levels mean for your brain health and Alzheimer's risk. These notes include personalized recommendations like cognitive exercises, lifestyle modifications to support brain health, dietary suggestions, and whether you should follow up with a neurologist for further evaluation. You'll also get the standard lab report and can track your biomarker levels over time using our trends feature, which is especially valuable for monitoring brain health as you age.

What's included in this test?

This test measures phosphorylated tau217 (p-tau217), a specific brain protein that leaks into the bloodstream when brain cells are damaged in Alzheimer's disease. Elevated p-tau217 levels can indicate increased risk of Alzheimer's years before significant symptoms appear, making it a powerful early screening tool. This biomarker is one of the most accurate blood-based indicators for detecting Alzheimer's-related brain changes and helps guide decisions about further testing or early intervention strategies.

How should I prepare for this test?

You should stop taking any biotin supplements at least 72 hours (3 days) before your blood draw. Biotin can interfere with the test results and cause inaccurate readings. Other than avoiding biotin, no special preparation like fasting is required. You can take other medications as normal unless specifically instructed otherwise by your healthcare provider.

Who should consider getting this test?

This test is important for adults over 50 experiencing memory lapses, difficulty with familiar tasks, or changes in thinking and reasoning. It's especially valuable if you have a family history of Alzheimer's or dementia, carry genetic risk factors like APOE4, or are concerned about early cognitive decline. People who want proactive brain health screening or are working with neurologists to assess dementia risk should also consider this test.

What symptoms indicate I may need this test?

Common signs include forgetting recent conversations or events, difficulty planning or solving problems, confusion with time or place, and trouble completing familiar tasks. You might also notice challenges with words in speaking or writing, misplacing things and being unable to retrace steps, decreased judgment, or withdrawal from social activities. If family members have expressed concern about your memory or thinking abilities, that's another important indicator to consider testing.

How can I naturally support my brain health?

Engage in regular physical exercise like brisk walking, swimming, or dancing, which increases blood flow to the brain. Stay mentally active with puzzles, reading, learning new skills, or social activities that challenge your thinking. Follow a Mediterranean-style diet rich in fish, olive oil, vegetables, and berries while limiting processed foods and sugar. Prioritize quality sleep, manage stress through mindfulness or meditation, and maintain strong social connections with friends and family.

What is p-tau217 and why does it matter?

P-tau217 is a modified form of tau protein that becomes abnormal in Alzheimer's disease. When brain cells are damaged, this protein accumulates and forms tangles inside neurons, then leaks into the bloodstream where it can be measured. Detecting elevated p-tau217 levels can identify Alzheimer's-related brain changes 10-20 years before major symptoms appear, giving you the opportunity for early intervention, lifestyle changes, and treatment planning.

What does high p-tau217 mean?

Elevated p-tau217 levels suggest there may be Alzheimer's-related changes occurring in your brain, indicating increased risk for developing Alzheimer's disease. This doesn't mean you definitely have Alzheimer's or will develop severe dementia, but it signals the need for closer monitoring and proactive steps. High levels typically warrant follow-up with a neurologist for additional testing like brain imaging or cognitive assessments.

How often should I retest my p-tau217 levels?

If your initial results are normal and you have no symptoms, retesting every 2-3 years may be appropriate for ongoing monitoring, especially if you have risk factors. If levels are elevated, your doctor may recommend retesting every 6-12 months to track progression and evaluate how interventions are working. The frequency depends on your age, symptoms, family history, and whether you're implementing preventive strategies or treatments.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

How do I know which test to get?

In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option. Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?

Absolutely! We totally understand that errors can happen. No worries, we're here to help you. Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you. There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out. Our lab requires an address to be listed to generate an order.

Do you accept health insurance?

Only HSA & FSA is accepted. Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts. This policy applies to all insurance companies, including federal health insurance programs like Medicare. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

Can I cancel my order?

Yes. We get it – sometimes your needs change. As long as your samples haven’t been collected yet, we’re happy to help you cancel your order. If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com. You can read more about our cancellation policy here.

How can I find a lab location near me?

During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp). Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

Alzheimer's Blood Test - Memory Loss Screening

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

[email protected]

Blood Test for Memory Loss and Alzheimer's Risk

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

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

How should I prepare for this test?

What's included in this test?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

Blood Test for Memory Loss and Alzheimer's Risk

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

1,000,000+ blood tests later, here's what our customers say