{"id":"urine-creatinine","name":"Urine Creatinine, Random","shortName":"Urine Creatinine","aliases":["Urine Creatinine","Creatinine, Random Urine","Creatinine, Urine","Creatinine, Urine (Random)","Creat, Urine","U Creatinine","Creatinine, Ur","Creatinina en orina","Kreatinin im Urin","Creatinine, Random, U","Creatinine, Urine - per volume","Creatinine, Spot Urine","Spot Urine Creatinine","Urinary Creatinine"],"abbreviations":["UCr","U Creat"],"loinc":[{"code":"2161-8","primary":true},{"code":"35674-1","primary":false},{"code":"14683-7","primary":false}],"specimen":"urine","units":[{"ucum":"mg/dL","display":"mg/dL"},{"ucum":"mmol/L","display":"mmol/L"},{"ucum":"umol/L","display":"µmol/L"},{"ucum":"g/L","display":"g/L"},{"ucum":"mg/L","display":"mg/L"}],"referenceRanges":[{"population":"18+","low":16,"high":326,"unit":"mg/dL","unitDisplay":"mg/dL","note":"Mayo Clinic Laboratories interval for ages 18 and up (not established under 18). Random urine creatinine moves mostly with how dilute the sample is, so ARUP publishes no reference interval for random urine. Read it as how concentrated the sample is, not as a kidney test.","sources":[{"title":"CRETR: Creatinine, Random, Urine (Mayo Clinic Laboratories catalog, mirrored at testcatalog.org)","url":"https://www.testcatalog.org/show/CRETR","publisher":"Mayo Clinic Laboratories"}]}],"review":{"status":"ai-draft","label":"AI-drafted. Awaiting verification","lastReviewed":"2026-10-03"},"summary":"How much creatinine, a muscle waste product, is in one urine sample. It shows how concentrated the urine is and is used to correct other urine results.","url":"https://bloodtesttracker.com/markers/urine-creatinine","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}