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Kidney Function Tests: Your Window to Kidney Health
Published: Jan 03, 2024
Kidney function tests are crucial tools for detecting and monitoring kidney health. These simple tests can reveal a wealth of information about your kidneys' performance.
What Are Kidney Function Tests?
Kidney function tests are a group of blood and urine tests that measure how well your kidneys are working. The most common tests include estimated glomerular filtration rate (eGFR), serum creatinine, and urine albumin-to-creatinine ratio (ACR). These tests help doctors assess kidney function and detect kidney disease.
Understanding Your Test Results
Your eGFR is a key indicator of kidney function, with normal values typically above 90 mL/min/1.73 m2. A lower eGFR may suggest kidney damage. The ACR test measures albumin in your urine, with values below 30 mg/g considered normal. Higher levels can indicate kidney problems.
When Should You Get Tested?
Regular kidney function tests are recommended for people at risk of kidney disease, including those with diabetes, high blood pressure, or a family history of kidney problems. Your doctor may suggest annual testing if you're in a high-risk group. Even if you're not at high risk, it's a good idea to have your kidney function checked during routine check-ups.
What Happens After the Test?
If your test results are abnormal, your doctor may recommend further testing or monitoring. This could include repeat tests, imaging studies, or referral to a kidney specialist (nephrologist). Early detection of kidney problems can lead to better outcomes, so it's important to follow up on any abnormal results.
Frequently Asked Questions
No, they typically involve a simple blood draw and urine sample.
Results are usually available within a few days.
Follow your doctor's instructions, but fasting is not usually required.
Annually if you're at high risk, or as recommended by your doctor.
Yes, healthy habits can positively impact kidney function over time.
Knowledge is Power
Regular kidney function tests are a powerful tool for maintaining your overall health and catching potential problems early.
References
- National Kidney Foundation. K/DOQI clinical practice guidelines for chronic kidney disease: evaluation, classification, and stratification. Am J Kidney Dis 2002; 39:S1.
- Kidney Disease: Improving Global Outcomes (KDIGO) CKD Work Group. KDIGO 2012 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int Suppl 2013; 3:1.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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