{"id":"lead-urine-24h","name":"Lead, 24-Hour Urine","shortName":"Urine Lead (24h)","aliases":["Lead, Urine 24 Hr","Lead ug/24 h","Lead, Urine (24h)","24-Hour Urine Lead","Lead, 24 Hour, Urine","Lead, Urine - per 24h","Lead, Urine, 24 Hour","Lead Excretion, 24-Hour Urine"],"abbreviations":[],"loinc":[{"code":"5677-0","primary":true},{"code":"14809-8","primary":false}],"specimen":"urine-24h","units":[{"ucum":"ug/(24.h)","display":"µg/24 h"},{"ucum":"umol/(24.h)","display":"µmol/24 h"},{"ucum":"nmol/(24.h)","display":"nmol/24 h"}],"referenceRanges":[{"population":"Adults","low":null,"high":8.1,"unit":"ug/(24.h)","unitDisplay":"µg/24 h","note":"ARUP's interval for a 24-hour collection (8.1 µg/day or lower). ARUP does not give an age or sex split. Other labs publish different cutoffs. Urine lead is not a stand-alone diagnostic test for lead poisoning, and these values do not apply to urine collected after a chelating (provoking) drug.","sources":[{"title":"Lead, Urine (test 0025060)","url":"https://ltd.aruplab.com/Tests/Pub/0025060","publisher":"ARUP Laboratories"},{"title":"ACMT Recommends Against Use of Post-Chelator Challenge Urinary Metal Testing","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC5711755/","publisher":"American College of Medical Toxicology (Journal of Medical Toxicology)","year":2017}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"The total amount of lead passed in your urine over 24 hours. It is less common than blood lead and is used mostly for follow-up or workplace monitoring.","url":"https://bloodtesttracker.com/markers/lead-urine-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."}