What's this test for?

This test is ideal if you're experiencing unexplained swelling, blood pressure changes, or if you've been told to watch your salt intake. It measures how much sodium your kidneys are releasing over a full day, which can point to issues with diet, kidney function, or hormone balance. It's also useful if you're managing a condition like heart failure or adrenal problems and need to track how well your body is handling salt and fluids.

What's included in this test?

This test measures the amount of sodium released in your urine over a 24-hour period, along with creatinine, which confirms the urine sample was collected correctly and completely. Sodium levels reflect your recent salt intake and how well your kidneys and hormones are managing fluid balance. Creatinine acts as a quality check, making sure the collection is accurate enough to trust the sodium result.

What happens after I get my results?

Your results will show up in your account with the normal range clearly explained so you can see exactly where your sodium level falls. If your levels are outside the expected range, simple next steps include adjusting your salt intake, drinking more or less fluid, or retesting in a few weeks to see if changes helped. A downloadable lab report is available in your account, and you can track your sodium levels over time using the trends feature to see patterns. If a result comes back extremely abnormal along with symptoms like severe swelling or confusion, seek medical care right away.

How can I naturally support healthy sodium balance?

Cutting back on processed foods, canned soups, and fast food is one of the biggest ways to lower excess sodium naturally, since these items are loaded with hidden salt. Drinking enough water throughout the day helps your kidneys flush out extra sodium more efficiently. Eating potassium-rich foods like bananas, spinach, and sweet potatoes can help balance sodium levels in the body. Regular movement and reducing stress also support healthy kidney and hormone function, which plays a role in sodium regulation.

When will I get my results?

Results are typically ready within about 7 days after the lab receives your completed 24-hour urine collection. You'll get a notification once your report is available in your account, so there's no need to call or follow up. Keep in mind that collection accuracy affects turnaround, so following the collection instructions closely helps avoid delays.

Who should consider this test?

This test is a good fit for people managing high blood pressure, kidney concerns, or heart failure who need to track how their body handles salt. It's also useful for anyone advised to follow a low-sodium diet and wants to confirm they're actually staying within a healthy range. People with unexplained swelling, fatigue, or fluid retention may also benefit from checking their sodium levels this way.

What symptoms indicate I may need this test?

Swelling in the legs, ankles, or hands, sudden weight gain from fluid retention, or unexplained high blood pressure are common signs worth checking. Excessive thirst, muscle cramps, or feeling unusually weak can also be linked to sodium imbalances. If you've noticed these symptoms along with changes in how much you urinate, this test can help clarify what's going on.

What does high urine sodium mean?

A high result usually means your diet includes a lot of salt, but it can also point to conditions like adrenal gland problems, certain kidney diseases, or the effects of diuretic medications. Cutting back on processed and salty foods for a few weeks and retesting can help you see if diet is the main driver. If levels stay high despite a lower-salt diet, it's worth looking deeper into kidney or hormone-related causes.

What does low urine sodium mean?

Low sodium in urine can happen with a very low-salt diet, but it can also be seen with conditions like heart failure, excessive sweating, diarrhea, or dehydration. It may also occur if your body is holding onto sodium due to hormone imbalances involving the adrenal glands. Making sure you're drinking enough fluids and eating a balanced diet is a good first step, with retesting to confirm improvement.

How often should I retest?

If you're adjusting your diet or monitoring a condition like high blood pressure or kidney issues, retesting every 4-8 weeks can help you track progress. Once your levels stabilize in a healthy range, testing once or twice a year is usually enough for ongoing monitoring. Your doctor's recommendations aside, using the trends feature in your account makes it easy to see how your levels change over time.

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.

24-Hour Urine Sodium Test - Kidney & Diet 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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