Version 2.71

1968-7Bilirubin.direct [Mass/volume] in Serum or PlasmaActive

Term Description

Except when measured by differential light absorption, direct bilirubin included glucuronidated and albumin bound (delta) bilirubin;Method can be WET CHEMISTRY or DRY SLIDE = (TBIL-Bu)
Source: Regenstrief LOINC

Part Description

LP15445-7   Bilirubin.glucuronidated+Bilirubin.albumin bound
Bilirubin is an orange-yellow pigment produced by the normal breakdown of heme, a component of the hemoglobin found in red blood cells. It is processed by the liver and excreted in bile. Conditions that cause red blood cell breakdown or interfere with liver or bile processing can cause elevated levels of bilirubin. Bilirubin exists in many forms. Non-glucuronidated bilirubin (also called unconjugated or indirect) is the breakdown product of heme and is not water-soluble. Hemolytic anemias, which cause increased red blood cell breakdown, are one cause of elevated non-glucuronidated bilirubin. Glucuronidated bilirubin (also called conjugated) is a water-soluble form of bilirubin that is made in the liver by the addition of sugar molecules to non-glucuronidated bilirubin. Conditions that affect liver function (such as hepatitis, cirrhosis and liver tumors) or physically block the bile ducts (such as gallstones) can cause elevated levels of glucuronidated bilirubin. A third form of bilirubin is that which is bound to albumin, and it is also known as delta bilirubin because it was originally identified based on the unexpected difference between the total bilirubin level and the level of glucuronidated plus non-glucuronidated bilirubin in some patient samples. Prior to the discovery of albumin-bound bilirubin, the term "direct" bilirubin was used as a synonym for glucuronidated bilirubin, but direct bilirubin is actually glucuronidated plus delta bilirubin (bilirubin covalently bound to albumin). Source: Regenstrief LOINC

Fully-Specified Name

Bilirubin.glucuronidated+Bilirubin.albumin bound

Additional Names

Short Name
Bilirub Direct SerPl-mCnc
Display Name
Bilirubin.direct [Mass/Vol]
Consumer Name Alpha
Bilirubin.direct, Blood

Basic Attributes

First Released
Version 1.0
Last Updated
Version 2.70
Order vs. Observation
Common US Lab Results Rank
Common Orders Rank

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2021 Lab Tests Online. All rights reserved. Bilirubin

Member of these Panels

LOINC Long Common Name
34543-9 Bilirubin direct and total panel [Mass/volume] - Serum or Plasma
24324-6 Hepatic function 1996 panel - Serum or Plasma
24325-3 Hepatic function 2000 panel - Serum or Plasma

Member of these Groups

LG6165-7 Bilirubin.glucuronidated+Bilirubin.albumin bound|MCnc|Pt|ANYBldSerPl
LG43215-9 Bilirubin.glucuronidated+Bilirubin.albumin bound|Pt|Ser/Plas

Language Variants Get Info

zh-CNChinese (China)
nl-NLDutch (Netherlands)
bilirubine.geglucuronideerd + bilirubine.albuminegebonden:massa/volume:moment:serum of plasma:kwantitatief:
fr-BEFrench (Belgium)
Bilirubine.glucuroconjuguée+bilirubine.liée ? l'albumine:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-CAFrench (Canada)
Bilirubine.glucuroconjuguée+bilirubine.liée à l'albumine:Concentration de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FRFrench (France)
Bilirubine conjuguée+liée à l'albumine:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
el-GRGreek (Greece)
Χολερυθρίνη συνδεδεμένη με γλυκουρονίδια+Χολερυθρίνη συνδεδεμένη με λευκωματίνη:Συγκέντρωση μάζας:Χρονική στιγμή:Ορός/Πλάσμα:Ποσοτική:
it-ITItalian (Italy)
Bilirubina.glucuronidata+Bbilirubina.albumina legata:MCnc:Pt:Siero/Plasma:Qn:
ko-KRKorean (Korea, Republic of)
글루쿠론산화 빌리루빈+알부민 결합 빌리루빈:질량농도:검사시점:혈청/혈장:정량:
pt-BRPortuguese (Brazil)
Bilirrubina.glicuronizada+Bilirrubina.ligada a albumina:MCnc:Pt:Sor/Plas:Qn:
ru-RURussian (Russian Federation)
Билирубин.глюкоронат+Билирубин.альбумин связанный:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
es-ARSpanish (Argentina)
bilirrubina.conjugada+bilirrubina.ligada a albúmina:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:
es-ESSpanish (Spain)
Bilirrubina conjugada + bilirrubina unida a albúmina:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
tr-TRTurkish (Turkey)
Bilirubin.glukuronize+Bilirubin.albumine bağlı:KütlKons:Zmlı:Ser/Plaz:Kant:

Example Units

Unit Source
mg/dL Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info