What's this test for?

This test is ideal if you're experiencing muscle cramps, weakness, fatigue, or irregular heartbeat that could be linked to a magnesium imbalance. It's also useful if you've had kidney stones or want to understand your risk for forming new ones. Your provider ordered a serum magnesium test that came back abnormal and now wants a closer look at how your kidneys are handling magnesium.

What happens after I get my results?

Your results will show up in your account with each value explained alongside its normal range, so you know right away if your urine magnesium is low, normal, or high. Depending on what you see, next steps might include adjusting your diet to add more magnesium-rich foods, cutting back on things that increase urinary losses like excess caffeine or alcohol, or retesting in a few months to check progress. If your result points to a significant imbalance or you have symptoms like severe cramping or irregular heartbeat, seek medical care promptly. You can download the full lab report anytime and use the trends feature to track your magnesium levels over time.

What is magnesium and why does it matter?

Magnesium is a mineral your body gets from food, and it's stored mostly in your bones and inside your cells rather than floating around in your blood. It acts like a helper molecule for hundreds of processes, including muscle function, nerve signals, and energy production. Because your body regulates blood magnesium so tightly, checking how much is coming out in your urine can reveal problems that a regular blood test might miss.

How can I naturally support healthy magnesium levels?

Eating more magnesium-rich foods like leafy greens, nuts, seeds, whole grains, and dark chocolate is one of the easiest ways to support healthy levels. Staying well-hydrated and limiting excessive alcohol or caffeine can help reduce unnecessary magnesium loss through urine. If you take antacids, laxatives, or diuretics regularly, talk to whoever manages your prescriptions since these can affect magnesium levels. Some people also find magnesium supplements helpful, but it's best to retest before and after to see if they're actually making a difference.

When will I get my results?

Results are typically ready within about 7 days of your sample being tested at the lab. Once ready, they'll be uploaded to your secure online account where you can view and download them anytime. You'll be able to see your specific magnesium and creatinine values along with easy-to-understand explanations.

Who should consider this test?

This test is a good fit for anyone with unexplained muscle cramps, weakness, or heart rhythm issues, especially if a previous blood magnesium test came back abnormal. People with a history of kidney stones or those at risk for stone formation may also benefit. It's also useful for people with conditions that cause magnesium loss, such as chronic diarrhea, heavy alcohol use, or long-term diuretic use.

What symptoms indicate I may need this test?

Common signs of a magnesium imbalance include muscle cramps, twitching, weakness, fatigue, nausea, and irregular heartbeat. Some people also notice numbness, tingling, or personality changes when levels are significantly off. If you've had recurring kidney stones, that's another reason this test might be worth considering.

What does high urine magnesium mean?

High urine magnesium usually means your kidneys are letting too much magnesium escape into your urine, which can happen with certain diuretics, uncontrolled diabetes, or hormonal conditions. If paired with low blood magnesium, this pattern points to your kidneys as the source of the loss rather than your diet. Addressing the underlying cause, like adjusting medications or better managing blood sugar, is usually the most effective next step.

What does low urine magnesium mean?

Low urine magnesium, especially when blood magnesium is also low, usually suggests you're either not getting enough magnesium from food or you're losing it through your gut, such as from diarrhea or malabsorption issues. It can also increase your risk of certain kidney stones, since magnesium normally helps keep calcium from crystallizing in urine. Boosting magnesium-rich foods and addressing any digestive issues are practical first steps.

How often should I retest?

If you're making dietary changes or starting a supplement, retesting after 6-8 weeks can show whether your magnesium levels are improving. If you have an ongoing condition affecting magnesium, such as kidney issues or chronic GI losses, retesting every few months helps you keep an eye on things. Otherwise, this test isn't typically needed on a routine basis unless symptoms return or your provider situation changes.

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.

Urine Magnesium Test - Kidney Stone & Deficiency 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

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