{"id":"mercury-blood","name":"Mercury, Blood","shortName":"Blood Mercury","aliases":["Blood Mercury","Mercury, Whole Blood","Mercury, Total, Blood","Hg, Blood","Mercury (Hg), Whole Blood","Mercurio en sangre","Quecksilber im Blut","Mercury, B","Hg WB"],"abbreviations":["B-Hg"],"loinc":[{"code":"5685-3","primary":true},{"code":"25170-2","primary":false}],"specimen":"whole-blood","units":[{"ucum":"ug/L","display":"µg/L"},{"ucum":"ug/dL","display":"µg/dL"},{"ucum":"nmol/L","display":"nmol/L"}],"referenceRanges":[{"population":"Adults","low":null,"high":10,"unit":"ug/L","unitDisplay":"µg/L","note":"Upper limit used by Mayo Clinic Laboratories (below 10 ng/mL, all ages) and ARUP Laboratories (up to 10.0 µg/L). ng/mL and µg/L are the same unit. ARUP says its interval relates to inorganic mercury and that dietary exposure to organic mercury can raise the total. In a US survey of women aged 16 to 49 in 1999 to 2000, 95 percent had methylmercury in blood below 6.7 µg/L.","sources":[{"title":"Heavy Metals Screen with Demographics, Blood (test HMDB)","url":"https://www.testcatalog.org/show/HMDB","publisher":"Mayo Clinic Laboratories (via the testcatalog.org mirror)"},{"title":"Mercury, Whole Blood (test 0099305)","url":"https://ltd.aruplab.com/Tests/Pub/0099305","publisher":"ARUP Laboratories"},{"title":"Blood organic mercury and dietary mercury intake: National Health and Nutrition Examination Survey, 1999 and 2000","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC1241922/","publisher":"Environmental Health Perspectives","year":2004}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Total mercury in whole blood, which mostly reflects methylmercury from fish and shellfish and any recent exposure.","url":"https://bloodtesttracker.com/markers/mercury-blood","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}