KidneyCheck

Check kidney test results against the KDIGO guideline. Or find out which kidney tests to ask for. Your answers stay on your phone.

Nothing is sent or stored2 minutesFree

Test version

A kidney doctor has not yet reviewed this tool. Use it to prepare for a visit to your doctor. Do not use it to make a treatment decision.

Start here

  1. The person

    Sex at birth

    The equations use sex at birth because it changes the normal creatinine level.

  2. Test results

    Enter the latest results first. Copy each number and unit from the lab report.

    The lab report may call it "albumin to creatinine ratio", "ACR" or "microalbumin ratio".

    mg/L

    Earlier tests show if a result has lasted more than 3 months. This is how doctors confirm chronic kidney disease (CKD).

  3. Other facts (optional)

    Signs of kidney damage
    Things that can change the results
    Symptoms now

How KidneyCheck works

  • It calculates the eGFR with the CKD-EPI 2021 equations. These equations do not use race.
  • It gives the KDIGO stage for kidney function (G1 to G5) and urine albumin (A1 to A3).
  • It confirms CKD only when results stay abnormal for more than 3 months.
  • It gives the Kidney Failure Risk Equation result when the eGFR is under 60.
  • It never gives medicine doses or treatment advice.
Sources
  • Inker LA and others. New creatinine- and cystatin C-based equations to estimate GFR without race. N Engl J Med 2021;385:1737-49.
  • Inker LA and others. Estimating glomerular filtration rate from serum creatinine and cystatin C. N Engl J Med 2012;367:20-9.
  • KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int 2024;105(4S).
  • KDIGO 2012 Clinical Practice Guideline for Acute Kidney Injury.
  • Tangri N and others. Multinational assessment of accuracy of equations for predicting risk of kidney failure. JAMA 2016;315:164-74.

Read more: kidney guides, kidney transplant, find a dialysis centre.