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MAG antibody IgM test for diagnosing autoimmune peripheral neuropathy symptoms

MAG Antibody Test for Nerve Numbness and Weakness

Myelin Associated Glycoprotein (MAG)-SGPG Antibody (IgM)

  • Detect autoimmune causes of nerve numbness
  • Screen for tingling and weakness causes
  • Check antibody levels linked to neuropathy
$546
First results as soon as overnight*

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
LegitScript certified

Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
LegitScript certified

What's this test for?

This test is ideal if you're experiencing numbness, tingling, weakness, or balance problems in your hands and feet that won't go away. These symptoms can be signs of nerve damage caused by your immune system mistakenly attacking the protective coating around your nerves. This test looks for specific antibodies that are linked to this type of autoimmune nerve damage.

What's included in this test?

This test measures one specific type of antibody in your blood. It matters because finding this antibody can help explain unexplained nerve symptoms that are otherwise hard to pin down, giving you a clearer picture of what might be causing your discomfort.

What happens after I get my results?

Your results will show up in your account with a clear explanation of what's considered a normal range for this antibody. If your levels are elevated, the report will explain what that may mean and suggest next steps, including whether retesting or further evaluation makes sense. You can download a standard lab report anytime from your account, and if you test again in the future, you can track changes over time using the trends feature.

How can I naturally support nerve health?
While antibody levels themselves aren't changed by lifestyle alone, supporting your nerves can help manage symptoms. Eating foods rich in B vitamins, staying physically active with gentle movement like walking or stretching, and managing stress through sleep and relaxation techniques can all support nerve function. Avoiding alcohol and smoking is also known to help protect nerve health over time.
When will I get my results?
Results for this test are typically ready within about 7 days after your sample is collected. You'll receive a notification once your report is available, and you can log into your account to view the full details at that time.
Who should consider this test?
This test is a good fit for people who have ongoing numbness, tingling, or muscle weakness in their limbs that hasn't been explained by other causes. It's also useful for anyone who has already been told they might have a nerve-related condition and wants more information about a possible autoimmune cause.
What symptoms indicate I may need this test?
Common symptoms include tingling or numbness in the hands and feet, muscle weakness, difficulty with balance or coordination, and a burning or prickling sensation in the limbs. If these symptoms are getting worse over time or are affecting your daily activities, this test can help identify a possible autoimmune cause.
What does a high antibody result mean?
A high result means your body has detectable levels of this antibody, which is associated with a type of autoimmune nerve damage called peripheral neuropathy. This doesn't automatically mean you have the condition, but it's a strong signal worth acting on. If your result is high, consider seeking medical care promptly, especially if your symptoms are severe or getting worse quickly.
How often should I retest?
If your first result comes back elevated or your symptoms are changing, retesting every few months can help you track whether antibody levels are rising, falling, or staying steady. If your result is normal but symptoms persist, it may be worth retesting later if things change. Using the trends feature in your account makes it easy to compare results side by side.
What should I do if my results are abnormal?
If your results come back abnormal, start by reviewing the detailed explanation in your report to understand what the number means for you. Keep track of your symptoms, including when they happen and how severe they are, since this information is useful going forward. If symptoms are severe, rapidly worsening, or affecting your ability to function, seek medical care right away.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email [email protected] 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 [email protected], and we'll gladly help you. We've got your back and reply quickly.
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 [email protected]. 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 [email protected].
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 [email protected].

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 [email protected] and we'll gladly help you.

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

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Get lab order in minutes, results come overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
MAG-SGPG Antibody (IgM) Positive (1:1,600 titer)
Demo results
Negative Positive
Positive (1:1,600 titer)

What this means

A positive result means antibodies linked to autoimmune nerve damage were detected in your blood. This finding is often associated with symptoms like numbness, tingling, or weakness in the hands and feet. A negative result means these antibodies were not detected at the tested level.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More advanced tests may take longer due to complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Find a lab near you

Search Quest Diagnostics and LabCorp locations available through Private MD Labs.

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MAG Antibody Test for Nerve Numbness and Weakness

  • Detect autoimmune causes of nerve numbness
  • Screen for tingling and weakness causes
  • Check antibody levels linked to neuropathy
$546
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
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For informational purposes only. Not medical advice.