Version 2.76

Part Description

LP15378-0   Retinol binding protein
Retinol binding proteins (RBPs) are a family of carrier proteins that bind retinol. The term "retinol binding protein" (singular) in the clinical literature commonly refers to the circulating form that transports retinol from the liver to peripheral tissues. This form, RBP4, is a low molecular weight protein 21kD in size that is sometimes referred to as alpha-2-microglobulin in older literature (for example see Because RBP4 is extensively reabsorbed by the kidney tubules, very little normally appears in excreted urine. An increase in the urinary excretion of retinol binding protein indicates impaired proximal tubular function. This can be caused by renal tubulointerstitial nephritis, tubular toxicity from heavy metal or nephrotoxic drug exposure, glomerulonephropathies and renal vasculopathies PMID: 11961401. Source: Regenstrief LOINC

Fully-Specified Name

Retinol binding protein

Additional Names

Short Name
Retinol Bind Prot Ur-mCnc
Display Name
Retinol binding protein (U) [Mass/Vol]
Consumer Name Alpha Get Info
Retinol binding protein, Urine

Basic Attributes

First Released
Version 2.09
Last Updated
Version 2.69
Change Reason
Release 2.69: COMPONENT: Updated to reflect current usage, with part description added to describe relationship to previous nomenclature of alpha-2-microglobulin.;
Order vs. Observation

Member of these Panels

LOINC Long Common Name
96401-5 Retinol binding protein panel - Urine

Member of these Groups Get Info

LOINC Group Group Name
LG51054-1 Retinol binding protein|MCnc|Urine

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: Retinolbind.Prot. /U
de-DE German (Germany) Retinol-bindendes Protein:Massenkonzentration:Zeitpunkt:Urin:Quantitativ:
es-AR Spanish (Argentina) proteína fijadora de alfa-2-retinol:concentración de masa:punto en el tiempo:orina:cuantitativo:
es-ES Spanish (Spain) Proteína de unión al retinol:Concentración de masa:Punto temporal:Orina:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Proteína de unión al retinol:Concentración de masa:Punto temporal:Orina:Cuantitativo:
et-EE Estonian (Estonia) Alfa-2-retinooliga siduv proteiin:MCnc:Pt:U:Qn:
Synonyms: Juhuslik Kvantitatiivne Uriin
fr-CA French (Canada) Protéine liant le rétinol:Concentration de masse:Temps ponctuel:Urine:Quantitatif:
fr-FR French (France) Retinol binding protein:Masse/Volume:Ponctuel:Urine:Numérique:
fr-BE French (Belgium) Protéine liant le rétinol alpha-2:Concentration de masse:Temps ponctuel:Urine:Quantitatif:
it-IT Italian (Italy) Proteina legante il retinolo:MCnc:Pt:Urine:Qn:
Synonyms: Chimica Concentrazione di Massa Punto nel tempo (episodio)
ko-KR Korean (Korea, Republic Of) 알파-2-레티놀 결합 단백:질량농도:검사시점:뇨:정량:
nl-NL Dutch (Netherlands) retinolbindend eiwit:massa/volume:moment:urine:kwantitatief:
pt-BR Portuguese (Brazil) Proteína ligadora do Alfa-2-Retinol:MCnc:Pt:Urina:Qn:
Synonyms: ; Vit A; Vit A1; Vitamin A alcohol; Vit A1 alcohol; Vit A alcohol; Axerophthol; Axerol; Biosterol; Vitamin A1; Prot; PR; Retinol Bind Prot; Vitamin A binding protein; RBP; Mass concentration; Level; Point in time; Random; Ur; UR; Urn; UA; Quantitative; QNT; Quant; Quan; A2; Alfa; II; Chemistry
ru-RU Russian (Russian Federation) Альфа-2-Ретинол связывающий протеин:МассКонц:ТчкВрм:Моча:Колич:
Synonyms: Альфа-2-Ретинол связывающий белок Белок Количественный Массовая концентрация Точка во времени;Момент
tr-TR Turkish (Turkey) Alfa-2-Retinol bağlayıcı protein:KütlKons:Zmlı:İdrar:Kant:
zh-CN Chinese (China) 视黄醇结合蛋白:质量浓度:时间点:尿液:定量型:
Synonyms: A2 视黄醇结合蛋白;A-2-视黄醇结合蛋白;A2-视黄醇结合蛋白;Alpha 2 视黄醇结合蛋白;RBP;α2 视黄醇结合蛋白;α2-视黄醇结合蛋白;维生素 A 结合蛋白;Alpha-2-视黄醇结合蛋白 PR;Prot;成分 - 化学 - 蛋白质类;蛋白;朊;蛋白质类;蛋白质类物质 Vit A;Vit A1;抗干眼醇;抗眼干燥病维生素;松香油;瑞叮醇;生甾醇;类维生素 A;维生素 A;维生素 A 醇;维生素 A1;维生素 A1 醇 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 尿;小便;下泉 时刻;随机;随意;瞬间 水平;浓度;质量浓度(单位体积) 结合性 结合性的

Example Units

Unit Source
mg/L Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

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