Kidney Health
Kidney health describes how well your kidneys filter waste, balance fluids, and regulate blood pressure. These bean-shaped organs are essential for removing toxins, maintaining electrolytes, and supporting red blood cell production.
Why Kidney Health Matters
Healthy kidneys protect your heart, bones, and overall well-being. Poor kidney function can lead to chronic kidney disease (CKD), which increases the risk of heart disease, anemia, and weak bones.
Kidney disease often develops silently. Blood and urine tests can show early signs of stress, allowing for changes in lifestyle or treatment to slow progression.
Biomarkers We Track for Your Kidneys
Lab testing through Hims is built around key biomarkers that reflect how your body is performing across major health systems. Each test focuses on high-impact indicators chosen to give you the clearest picture of your well-being and where to take action next. Instead of testing everything, Hims zeroes in on the markers that matter most for guiding long-term health improvements.
Tests for kidney health use blood and urine markers to measure how well your kidneys are filtering waste.
Blood Urea Nitrogen (BUN)
Blood urea nitrogen (BUN) measures the amount of urea, a waste product from protein breakdown, in your blood. Normal levels mean your kidneys are doing a good job of clearing protein waste.
BUN/Creatinine Ratio
This marker compares protein waste (BUN) and creatinine to give a reading on hydration and protein metabolism. A normal ratio suggests healthy fluid balance and that your kidneys are handling protein waste well.
Creatinine
Creatinine is a waste product from muscle activity, like exercise, that the kidneys filter out of the blood. A normal Creatinine level shows that the kidneys are working well and doing a good job of filtering.
Estimated Glomerular Filtration Rate (eGFR)
Estimated glomerular filtration rate (eGFR) measures how well your kidneys filter blood each minute. Healthy levels mean your kidneys are effectively removing waste and balancing fluids.
Why Get Labs Through Hims
With lab testing through Hims, you get clear results that span multiple areas of health — connecting the dots between your cardiovascular system, metabolism, hormones, liver, kidneys, nutrients, inflammation, immune function, blood health, stress, and even biological age. The results are explained clearly and simply, so you can easily understand what’s happening inside your body.
Beyond the numbers, Hims provides actionable insights into where you need to focus to improve your health. Each result comes with insights to help you make sense of your biomarkers and identify practical steps to support better outcomes.
If your results suggest areas for improvement, you’ll receive an action plan designed by experts that includes lifestyle guidance and, when deemed appropriate by a healthcare provider, prescription medication to help you reach your goals.
More than 2.4 million people trust Hims & Hers for accessible, science-backed care — from lab testing to ongoing health management.1
Related Health Categories
Frequently Asked Questions
Who should get tested for kidney health and when?
You may benefit from kidney testing if you:
• Have diabetes, high blood pressure, or heart disease.
• Have a family history of kidney disease.
• Take medications that may affect kidney function.
• Notice swelling in your legs, ankles, or around your eyes.
• Experience unexplained fatigue, nausea, or changes in urination.
Can kidney disease be reversed?
Early kidney problems may improve with lifestyle changes and medical care. Advanced kidney disease is harder to reverse, but can often be slowed.
Is eGFR the best test for kidney function?
eGFR is the most commonly used test to estimate how well your kidneys filter blood. It’s based on your creatinine level and takes into account factors like age, sex, and race. Because it’s an estimate, providers usually interpret it alongside other tests, such as BUN and urine studies.
Do kidney problems always cause symptoms?
No. Many people with reduced kidney function feel fine until the disease is advanced, which is why routine testing matters.
Can dehydration affect kidney test results?
Yes. Dehydration can temporarily raise BUN and creatinine. Your provider may recommend repeating the tests to confirm whether the results reflect your true kidney function.
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Reviewed by Felix Gussone, MD
Published 11/13/2025