{"id":"urine-creatinine-24h","name":"Urine Creatinine, 24-Hour","shortName":"24-Hour Urine Creatinine","aliases":["Creatinine, 24 Hour Urine","Creatinine, 24h Urine","Creatinine, Total 24H","Creatinine Excretion","Creatinine, Urine - per 24h","Creatinine, 24 HR, U","Creatinine, Urine, 24 Hour","24-Hour Urine Creatinine","Urinary Creatinine Excretion","Creatinine, 24 Hr Urine","Creatinine Total, 24 Hour Urine"],"abbreviations":["24h UCr","UCr 24h"],"loinc":[{"code":"2162-6","primary":true},{"code":"14684-5","primary":false},{"code":"20624-3","primary":false}],"specimen":"urine-24h","units":[{"ucum":"mg/(24.h)","display":"mg/24 h"},{"ucum":"g/(24.h)","display":"g/24 h"},{"ucum":"mmol/(24.h)","display":"mmol/24 h"},{"ucum":"umol/(24.h)","display":"µmol/24 h"}],"referenceRanges":[{"population":"Men, 18–50","low":1000,"high":2500,"unit":"mg/(24.h)","unitDisplay":"mg/24 h","note":"ARUP age-specific interval. Mayo Clinic Laboratories uses one wider adult interval for men, 930-2955 mg/24 h (ages 18 and up), so labs differ. Wide natural spread: muscle mass, diet and collection completeness all move it.","sources":[{"title":"Creatinine, Urine - per 24h (test 0020473)","url":"https://ltd.aruplab.com/Tests/Pub/0020473","publisher":"ARUP Laboratories"}]},{"population":"Women, 18–50","low":700,"high":1600,"unit":"mg/(24.h)","unitDisplay":"mg/24 h","note":"ARUP age-specific interval. Mayo Clinic Laboratories uses one wider adult interval for women, 603-1783 mg/24 h (ages 18 and up), so labs differ. Wide natural spread: muscle mass, diet and collection completeness all move it.","sources":[{"title":"Creatinine, Urine - per 24h (test 0020473)","url":"https://ltd.aruplab.com/Tests/Pub/0020473","publisher":"ARUP Laboratories"}]},{"population":"Men, 51–80","low":800,"high":2100,"unit":"mg/(24.h)","unitDisplay":"mg/24 h","note":"ARUP age-specific interval. Mayo Clinic Laboratories uses one wider adult interval for men, 930-2955 mg/24 h (ages 18 and up), so labs differ. Wide natural spread: muscle mass, diet and collection completeness all move it.","sources":[{"title":"Creatinine, Urine - per 24h (test 0020473)","url":"https://ltd.aruplab.com/Tests/Pub/0020473","publisher":"ARUP Laboratories"}]},{"population":"Women, 51–80","low":500,"high":1400,"unit":"mg/(24.h)","unitDisplay":"mg/24 h","note":"ARUP age-specific interval. Mayo Clinic Laboratories uses one wider adult interval for women, 603-1783 mg/24 h (ages 18 and up), so labs differ. Wide natural spread: muscle mass, diet and collection completeness all move it.","sources":[{"title":"Creatinine, Urine - per 24h (test 0020473)","url":"https://ltd.aruplab.com/Tests/Pub/0020473","publisher":"ARUP Laboratories"}]},{"population":"Men, 81+","low":600,"high":2000,"unit":"mg/(24.h)","unitDisplay":"mg/24 h","note":"ARUP age-specific interval. Mayo Clinic Laboratories uses one wider adult interval for men, 930-2955 mg/24 h (ages 18 and up), so labs differ. Wide natural spread: muscle mass, diet and collection completeness all move it.","sources":[{"title":"Creatinine, Urine - per 24h (test 0020473)","url":"https://ltd.aruplab.com/Tests/Pub/0020473","publisher":"ARUP Laboratories"}]},{"population":"Women, 81+","low":400,"high":1300,"unit":"mg/(24.h)","unitDisplay":"mg/24 h","note":"ARUP age-specific interval. Mayo Clinic Laboratories uses one wider adult interval for women, 603-1783 mg/24 h (ages 18 and up), so labs differ. Wide natural spread: muscle mass, diet and collection completeness all move it.","sources":[{"title":"Creatinine, Urine - per 24h (test 0020473)","url":"https://ltd.aruplab.com/Tests/Pub/0020473","publisher":"ARUP Laboratories"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Total creatinine in all the urine you pass over 24 hours. It mostly reflects muscle mass and helps show whether a 24-hour collection was complete.","url":"https://bloodtesttracker.com/markers/urine-creatinine-24h","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}