Indicator Explainer
Bilirubin
A dark orange, yellow pigment that is the product of the breakdown of iron in the blood; it is conjugated in the liver and excreted in the bile.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C305. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
Related Tests
Tests that measure or involve this indicator.
References
- NCI Thesaurus 26.09d — Bilirubin (C305)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C305. NCI definition, reproduced without modification under CC BY 4.0.
- Comment on "Albumin-bilirubin grade and sarcopenia as predictors of prognosis in patients with unresectable intermediate and advanced-stage hepatocellular carcinoma". — Indian J Gastroenterol, 2026-10-09 (PMID 42855648; literature)
- Joint associations of estimated glucose disposal rate and the Albumin-Bilirubin score with coronary heart disease prevalence: A cross-sectional analysis based on NHANES. — Sci Prog, 2026-10-07 (PMID 42842744; literature)
- Barrier-reinforcing hyaluronic acid-bilirubin nanodelivery of methylprednisolone for synergistic modulation of the intestinal barrier, immune system, and gut microbiome in colitis. — J Control Release, 2026-10-06 (PMID 42838456; literature)
- Accuracy of non-invasive smartphone bilirubin measurements on neonates before and during phototherapy. — Eur J Pediatr, 2026-10-06 (PMID 42836900; literature)
- Traffic-light-type visual sensing of bilirubin: a dual-emission Au-Ag NCs/MOF-808/Tb nanocomposite based on an asynchronous quenching strategy. — Mikrochim Acta, 2026-10-06 (PMID 42834242; literature)
- Relationship of the C-reactive protein/albumin ratio and the albumin-bilirubin score with latency period and perinatal outcomes in preterm premature rupture of membranes. — Int J Gynaecol Obstet, 2026-10-12 (PMID 42861794; literature)
- Impact of albumin-bilirubin score change on prognosis in hepatocellular carcinomia treated with tyrosine kinase inhibitors: a single-center real-world study. — J Liver Cancer, 2026-10-12 (PMID 42860673; literature)
- Association Between Albumin-Bilirubin Index and Clinical Outcomes in Septic Acute Kidney Injury Patients. — J Intensive Care Med, 2026-10-19 (PMID 42895663; literature)
- Identifying a Cardio-Hepatic Phenotype by Integrating the Albumin-Bilirubin Score Into Risk Assessment in Pulmonary Arterial Hypertension. — Pulm Circ, 2026-10-16 (PMID 42891253; literature)
- Commutability assessment of candidate reference materials for total bilirubin assays in neonates. — Clin Chem Lab Med, 2026-10-29 (PMID 42949072; literature)