Check Your Kidney Function
Free GFR calculator for early detection, risk assessment, and disease management.
Why Check Kidney Function?
The kidneys remove metabolic waste, balance essential electrolytes (such as potassium and sodium), manage fluid balance, and maintain acid-base homeostasis. When kidney function declines, waste products and hydrogen ions accumulate, leading to uremic symptoms and metabolic acidosis.
Common Causes of Kidney Disease
Diabetes mellitus and hypertension remain the leading causes of chronic kidney disease (CKD). CKD is progressive, and clinical manifestations often remain asymptomatic until significant nephron loss occurs. Most patients are diagnosed at advanced stages because symptoms typically manifest only after losing more than 90% of renal function.
👉 Early detection via routine screening is key to delaying progression and preserving renal function.
Diagnostic Assessment
Renal clearance is evaluated primarily through serum biomarker measurements and urinalysis:
- Serum Creatinine: Used to estimate Glomerular Filtration Rate (eGFR).
- Urinalysis: Identifies early markers such as proteinuria or microalbuminuria.
- Up to 90% of renal capacity can be lost before significant physical symptoms occur.
Screening Workflow
Basic renal evaluation requires a serum creatinine blood test and a standard dipstick urinalysis. Urinalysis can detect early structural kidney damage before significant eGFR drops occur.
Check how well your kidneys are filtering waste and excess fluid from your blood and identify risk factors for renal (kidney) failure
Enter your laboratory and clinical metrics below to calculate GFR and view clinical staging guidance.