{"id":"lead-urine-creatinine","name":"Lead/Creatinine Ratio, Urine","shortName":"Urine Lead/Creatinine","aliases":["Lead/Creatinine, Urine","Lead, Urine (ug/g creatinine)","Lead, Urine Creatinine Corrected","Lead ug/g Creatinine","Lead, Random Urine, Creatinine Ratio","Lead, Urine (per g Creatinine)","Lead, Urine - ratio to CRT","Lead/Creat Ratio, Random, U","Lead Creatinine Ratio"],"abbreviations":["Pb/Cr"],"loinc":[{"code":"13466-8","primary":true},{"code":"34327-7","primary":false}],"specimen":"urine","units":[{"ucum":"ug/g","display":"µg/g creatinine"},{"ucum":"ug/mmol","display":"µg/mmol creatinine"}],"referenceRanges":[{"population":"18+","low":null,"high":2,"unit":"ug/g","unitDisplay":"µg/g creatinine","note":"Mayo Clinic Laboratories limit for adults (less than 2 µg/g creatinine). ARUP Laboratories uses a higher upper limit of 5.0 µg/g creatinine, so labs differ. Mayo has no reference values for people under 18.","sources":[{"title":"Lead/Creatinine Ratio, Random, Urine (test PBUCR)","url":"https://www.testcatalog.org/show/PBUCR","publisher":"Mayo Clinic Laboratories (via the testcatalog.org mirror)"},{"title":"Lead, Random Urine (test 2011482)","url":"https://ltd.aruplab.com/Tests/Pub/2011482","publisher":"ARUP Laboratories"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Lead in a urine sample, shown per gram of creatinine so the result is not thrown off by how dilute your urine is.","url":"https://bloodtesttracker.com/markers/lead-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."}