LOINC
Version 2.73

18264-2Deprecated Direct bilirubin [Mass/volume] in Serum or PlasmaDeprecated

Status Information

Status
Deprecated
Reason
Duplicate
Map-To Long Common Name Mapping Guidance
1968-7 Bilirubin.direct [Mass/volume] in Serum or Plasma

Term Description

Except when measured by differential light absorption, direct bilirubin included glucuronidated and albumin bound (delta) bilirubin.
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

Component
Bilirubin.glucuronidated+Bilirubin.albumin bound
Property
MCnc
Time
Pt
System
Ser/Plas
Scale
Qn
Method
Incubation.1M

Additional Names

Short Name
Deprecated Bilirub Direct SerPl 1m Inc-m
Display Name
Bilirubin.direct 1 minute incubation [Mass/Vol]
Consumer Name Alpha
Bilirubin.direct, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0l
Last Updated
Version 2.70

Member of these Groups

LG6165-7 Bilirubin.glucuronidated+Bilirubin.albumin bound|MCnc|Pt|ANYBldSerPl

Language Variants Get Info

zh-CNChinese (China)
胆红素.葡糖醛酸化+胆红素.白蛋白结合型:质量浓度:时间点:血清/血浆:定量型:1分钟孵育
it-ITItalian (Italy)
Bilirubina.glucuronidata+Bbilirubina.albumina legata:MCnc:Pt:Siero/Plasma:Qn:Incubazione.1Minuto
pt-BRPortuguese (Brazil)
Bilirrubina.glicuronizada+Bilirrubina.ligada a albumina:MCnc:Pt:Sor/Plas:Qn:Incubação.1 min
es-ARSpanish (Argentina)
bilirrubina.conjugada+bilirrubina.ligada a albúmina:concentración de masa:punto en el tiempo:suero/plasma:cuantitativo:incubación.1 mes
es-MXSpanish (Mexico)
Bilirrubina glucuronidada + Bilirrubina ligada a albúmina:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:1 minuto de incubación
es-ESSpanish (Spain)
Bilirrubina conjugada + bilirrubina unida a albúmina:Concentración de masa:Punto temporal:Suero o Plasma:Qn:1 minutode incubación

Example Units

Unit Source
mg/dL Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=18264-2