What's this test for?

This test is ideal if you're experiencing muscle weakness that gets worse with activity and improves with rest, drooping eyelids, double vision, or trouble chewing, swallowing, or breathing. These symptoms can point to myasthenia gravis, an autoimmune condition where your body mistakenly attacks the connections between your nerves and muscles. This test looks for the specific antibodies responsible for that attack.

What happens after I get my results?

Your results will show up in your account along with an explanation of what's considered a normal range for this antibody. If your result is positive, the report will explain what that means and note that additional antibody testing (modulating or blocking antibodies) may be worth considering if this one comes back negative. If your levels are very high or your symptoms are severe, such as trouble breathing or swallowing, seek medical care right away. You can also download a standard lab report anytime and track any repeat tests over time using the trends feature.

What's included in this test?

This test measures acetylcholine receptor binding antibodies (AChR binding antibodies), the specific autoantibodies most commonly linked to myasthenia gravis and found in 85-90% of people with the condition. Checking for these antibodies matters because their presence helps confirm whether muscle weakness is caused by this autoimmune condition rather than another neuromuscular or muscular issue, and can also help monitor how well treatment is working over time.

Who should consider this test?

Anyone dealing with unexplained muscle weakness that fluctuates throughout the day, especially weakness affecting the eyes, face, throat, or limbs, should consider this test. It's also useful for people already diagnosed with myasthenia gravis who want to track how well their treatment is working over time. If you have a family history of autoimmune conditions and are noticing similar symptoms, this test can offer helpful answers.

When will I get my results?

Results are typically ready within about 7 days of your sample being processed at the lab. You'll get a notification once your report is available in your account, where you can view and download it at any time.

What symptoms indicate I may need this test?

Common signs include drooping eyelids, double or blurred vision, slurred speech, trouble chewing or swallowing, and weakness in your arms, legs, or neck that tends to worsen with activity and gets better with rest. Some people also notice shortness of breath during physical exertion. If these symptoms come and go or seem to worsen throughout the day, it's worth getting checked.

How can I naturally support muscle and nerve health?

While antibody levels themselves aren't controlled by lifestyle changes, supporting your overall muscle and nerve function can help you manage symptoms. Getting enough rest, pacing physical activity to avoid overexertion, eating a balanced diet rich in vitamins B12 and D, and managing stress can all help your body cope better. Avoid overheating, as high temperatures can temporarily worsen muscle weakness for some people.

What does a positive result mean?

A positive result means your body is producing antibodies that attack the connection between your nerves and muscles, which is strongly associated with myasthenia gravis. About 85-90% of people with this condition test positive for these antibodies. If your result is positive, it's a good idea to discuss appropriate next steps for managing symptoms and monitoring your condition.

What causes these antibodies to develop?

These antibodies form when your immune system mistakenly targets acetylcholine receptors, which are needed for nerves to signal muscles to move. Researchers believe a combination of genetic factors and immune system triggers, sometimes involving the thymus gland, plays a role. It's not caused by anything you did, and it isn't preventable through diet or lifestyle.

How often should I retest?

If you're being monitored for myasthenia gravis or tracking how well a treatment is working, retesting every few months can help show whether antibody levels are changing. If your first test was negative but symptoms persist or worsen, retesting or considering additional antibody assays (like modulating or blocking antibodies) may provide more clarity. Tracking results over time in your account makes it easy to spot trends.

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.

Myasthenia Gravis Antibody Test - Muscle Weakness Check

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]

Myasthenia Gravis Antibody Blood Test

Acetylcholine Receptor Binding Antibody

Prescription & fees included

Easy to understand results

Fast & convenient

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

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Myasthenia Gravis Antibody Blood Test

Prescription & fees included

Easy to understand results

Fast & convenient

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