What's this test for?

This test is ideal if you're experiencing unexplained fatigue, swelling in your legs or ankles, changes in urination, or have concerns about your kidney health. It helps detect early signs of kidney problems before they become serious, and can clarify whether symptoms like tiredness or difficulty concentrating are related to how well your kidneys are filtering waste. Many people use this test if they have diabetes, high blood pressure, or a family history of kidney disease.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your kidney function results mean for your overall health and energy levels. These notes include personalized recommendations like hydration strategies, dietary adjustments to support kidney health, or whether you should follow up with a nephrologist or primary care doctor. You'll also get the standard lab report and can track your kidney function over time using our trends feature, which is especially helpful for monitoring chronic conditions or the effectiveness of lifestyle changes.

What's included in this test?

This panel measures Albumin, BUN/Creatinine Ratio, Calcium, Carbon Dioxide, Chloride, Creatinine, Glucose, Phosphate (As Phosphorus), Potassium, Sodium, Urea Nitrogen (BUN), and eGFR. This comprehensive panel evaluates your kidney function through creatinine and eGFR measurements, which show how effectively your kidneys filter waste from your blood. It also checks electrolyte balance (sodium, potassium, chloride, calcium, phosphate, carbon dioxide) that kidneys regulate, blood urea nitrogen (BUN) levels that indicate waste removal efficiency, and albumin, glucose, and BUN/creatinine ratio for a complete picture. Together, these measurements identify early kidney dysfunction, electrolyte imbalances, and metabolic issues that can affect your energy and long-term health.

How should I prepare for this test?

You should fast for 12 hours before your blood draw, which means no food or beverages except water during that time. This fasting period ensures accurate glucose and other metabolic measurements. Schedule your appointment for the morning so you can fast overnight, and bring water to stay hydrated. Take any regular medications as prescribed unless your doctor advises otherwise.

Who should consider getting this test?

This test is important for anyone with diabetes, high blood pressure, or cardiovascular disease, as these conditions increase kidney disease risk. It's also recommended if you have a family history of kidney problems, take medications that can affect kidney function, experience symptoms like fatigue or swelling, or want to establish a baseline for preventive health monitoring. Adults over 60 and those with obesity should also consider regular kidney function screening.

What symptoms indicate I may need this test?

Common symptoms that suggest you should check your kidney function include persistent fatigue or weakness, swelling in your ankles, feet, or hands, changes in urination patterns like frequency or color, foamy or bubbly urine, difficulty concentrating or brain fog, and poor appetite or nausea. You might also experience muscle cramps, difficulty sleeping, or puffiness around your eyes, especially in the morning.

How can I naturally support my kidney health?

Supporting kidney health starts with staying well-hydrated by drinking adequate water throughout the day and limiting excessive caffeine or alcohol. Following a balanced diet that's lower in sodium and processed foods helps reduce kidney strain, while maintaining healthy blood pressure and blood sugar levels protects kidney function long-term. Regular moderate exercise, limiting NSAID pain relievers, avoiding smoking, and managing stress all contribute to better kidney health.

What is eGFR and why does it matter?

eGFR (estimated Glomerular Filtration Rate) is the most important measurement of how well your kidneys are filtering waste from your blood. It's calculated using your creatinine level, age, and other factors, and is expressed as a number that reflects the percentage of normal kidney function. A normal eGFR is typically 90 or above, and declining numbers can indicate progressive kidney disease, making it crucial for early detection and monitoring.

What does high creatinine mean?

High creatinine levels suggest your kidneys may not be filtering waste as efficiently as they should. This can indicate reduced kidney function, dehydration, muscle breakdown, or the effects of certain medications. Elevated creatinine is often one of the first signs of kidney problems and warrants follow-up testing and evaluation by your doctor to determine the cause and appropriate treatment.

How often should I retest my kidney function?

If you have risk factors like diabetes, high blood pressure, or known kidney disease, you should typically retest every 3-6 months to monitor kidney function trends. For people with stable, normal kidney function and no risk factors, annual testing is usually sufficient for preventive monitoring. Your doctor may recommend more frequent testing if your results show declining kidney function or if you start new medications that can affect the kidneys.

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.

Kidney Function Test - Check Fatigue & Health

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 Kidney Function and Unexplained Fatigue

Kidney Function Profile

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 Kidney Function and Unexplained Fatigue

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