{"id":"bilirubin-total","name":"Bilirubin, Total","shortName":"Total bilirubin","aliases":["Total Bilirubin","T Bili","TBIL","T Bil","T. Bilirubin","Bilirubin, Total, Neonatal","Bilirrubina total","Bilirubin, Total, Serum","Total Bilirubin, Serum","Bilirubin Total","Bilirubin (Total)","Bilirubin Tot","Total Serum Bilirubin","Bilirubine totale","Bilirubina totale","Gesamtbilirubin"],"abbreviations":["TBIL","T BILI","TSB"],"loinc":[{"code":"1975-2","primary":true},{"code":"14631-6","primary":false},{"code":"35194-0","primary":false},{"code":"77137-8","primary":false},{"code":"42719-5","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"mg/dL","display":"mg/dL"},{"ucum":"umol/L","display":"µmol/L"},{"ucum":"mg/L","display":"mg/L"}],"referenceRanges":[{"population":"18+","low":0,"high":1.2,"unit":"mg/dL","unitDisplay":"mg/dL","note":"Labcorp and Mayo Clinic Laboratories both print 0.0–1.2 mg/dL (up to about 21 µmol/L) for adults, with no split by sex. The American Board of Internal Medicine's reference list gives 0.3–1.0 mg/dL. Intervals differ by lab and method, so use the range printed on your own report first.","sources":[{"title":"Bilirubin, Total (test 001099)","url":"https://www.labcorp.com/tests/001099/bilirubin-total","publisher":"Labcorp"},{"title":"Pediatric Testing Reference Ranges","url":"https://www.labcorp.com/content/dam/labcorp/drupal/178250_DX_TL_PediatricTestRef_Final.pdf","publisher":"Labcorp","year":2022},{"title":"Comprehensive Metabolic Panel, Serum (test ID CMAMA)","url":"https://www.testcatalog.org/show/CMAMA","publisher":"Mayo Clinic Laboratories"},{"title":"Liver Profile, Serum (test ID LIVPR)","url":"https://www.testcatalog.org/show/LIVPR","publisher":"Mayo Clinic Laboratories"},{"title":"ABIM Laboratory Test Reference Ranges (January 2026)","url":"https://www.abim.org/Media/bfijryql/laboratory-reference-ranges.pdf","publisher":"American Board of Internal Medicine","year":2026}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A yellow pigment made when old red blood cells break down. Your liver clears it, so the level reflects red cell turnover and bile flow.","url":"https://bloodtesttracker.com/markers/bilirubin-total","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}