Version 2.74

Part Description

LP15030-7   Immunoglobulin light chains.kappa
All immunoglobulins contain two polypeptide chains: a long (heavy) and a short (light) chain. The two chains interact via disulfide bonds. There are two types of light chains, named kappa and lambda. Serum free light chain (SFLC) testing, a kappa/lambda ratio and a protein electrophoresis test are done to help detect, diagnose and monitor plasma cell disorders (dyscrasias) including multiple myeloma and primary amyloidosis. Normal readings are seen when there is a kappa/lambda ratio of approximately 0.26 to 1.65 and free light chains are present in the blood at low levels. Increased kappa free light chains and an increased kappa/lambda ratio are present with plasma cell disorders that produce excess monoclonal kappa light chains. The tests can also be used to monitor response to treatment. An increase in serum free light chains along with an abnormal kappa/lambda ratio may indicate primary amyloidosis; biopsy of affected tissue is typically used for confirmation of diagnosis. [PMID:6802926 ] [Lab Tests Online:free-light/tab/test] Source: Regenstrief LOINC

Fully-Specified Name

Immunoglobulin light chains.kappa

Additional Names

Short Name
Kappa LC Ur Ql Elph
Display Name
Immunoglobulin light chains.kappa Elph Ql (U)
Consumer Name Alpha
Immunoglobulin light chains.kappa, Urine

Basic Attributes

First Released
Version 1.0h(2)
Last Updated
Version 2.73
Change Reason
The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016. Changed the LCN from 'Immunoglobulin light chains.kappa' to 'Kappa light chains' for readability.
Order vs. Observation
Common Test Rank

Member of these Groups Get Info

LOINC Group Group Name
LG16697-1 Immunoglobulin light chains.kappa|PrThr|Pt|ANYUrine
LG36220-8 Immunoglobulin light chains.kappa|PrThr|Urine

Language Variants Get Info

Tag Language Translation
zh-CN Chinese (China) 免疫球蛋白轻链.Kappa 型:存在情况或阈值:时间点:尿液:序数型:电泳
Synonyms: Bence Jones 氏蛋白;Bence Jones 蛋白;BJ 蛋白;B-J 蛋白;BJP;本周氏蛋白;本-周氏蛋白;本周氏蛋白(Bence Jones protein,BJ Protein,BJP);本周蛋白;本-周蛋白 Ig Kappa LC;Kappa 型免疫球蛋白轻链;Kappa 型轻链;Kappa 轻链;κ型免疫球蛋白轻链;κ型轻链;κ轻链;免疫球蛋白轻链.Kappa;免疫球蛋白轻链.κ型;轻链.Kappa;轻链.Kappa 型;轻链.κ;轻链.κ型 丙种球蛋白 依次型;分类顺序型;定性的;序数型(或称等级型);性质上的;有序型;有序性分类应答;有序性分类结果;秩次型;等级型;筛查;顺序型 免疫球蛋白(Immunoglobulin,Ig) 免疫球蛋白类 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 存在情况;存在;存在与否;是否存在;阈值;界值;界限;阀值;临界值;存在情况(存在、存在与否、是否存在)或阈值(界值、界限、阀值、临界值) 尿;小便;下泉 时刻;随机;随意;瞬间 电泳分析;电泳分析方法;电泳分析类实验室方法;电泳分析类方法;电泳分析类检验方法;电泳方法;电泳类实验室方法;电泳类方法;电泳类检验方法 链
es-AR Spanish (Argentina) cadenas livianas de inmunoglobulina.kappa:concentración arbitraria:punto en el tiempo:orina:ordinal:electroforesis
fr-CA French (Canada) Chaînes légères d'immunoglobulines.kappa:Présence-Seuil:Temps ponctuel:Urine:Ordinal:Électrophorèse
et-EE Estonian (Estonia) Immuunoglobuliini kerged ahelad.kapa:PrThr:Pt:U:Ord:Elektroforees
Synonyms: Immuunglobuliinide kerged kapaahelad Järgarvuline Juhuslik Uriin
pt-BR Portuguese (Brazil) Imunoglobulinas cadeias leves.kappa:ACnc:Pt:Urina:Ord:Eletroforese
Synonyms: ; Kappa LC; BJ Protein; BJP; Bence Jones protein; Arbitrary concentration; Point in time; Random; Ur; UR; Urn; UA; Ql; Ordinal; QL; Qualitative; Qual; Screen; Elph; Elp; Elect; Electrophrs; Electrophhrs; Electr; Elec; Ep; Electro; Immune globulin; Imunoglbon; Immuno; Imunoglobn; Immunoglobin; Immunoglob; Chain; Chemistry
es-ES Spanish (Spain) Cadenas ligeras de las inmunoglobulinas.kappa:PrThr:Punto temporal:Orina:Ord:Electroforesis
ko-KR Korean (Korea, Republic Of) 카파면역글로불린 경쇄:임의농도:검사시점:뇨:순위척도:전기영동
it-IT Italian (Italy) Immunoglobuline, catene leggere.kappa:PrThr:Pt:Urine:Ord:Elettroforesi
Synonyms: Catene leggere delle immunoglobuline Catene leggere kappa delle immunoglobuline Chimica Presenza o Soglia Punto nel tempo (episodio)
fr-FR French (France) Immunoglobuline chaines légères kappa:Présence/Seuil:Ponctuel:Urine:Qualitatif:Électrophorèse
tr-TR Turkish (Turkey) İmmünglobulin hafif zincirler.kappa:MevcEşik:Zmlı:İdrar:Srl:Elektroforez
Synonyms: Mevcut
ru-RU Russian (Russian Federation) Иммуноглобулин легкие цепи.каппа:PrThr:ТчкВрм:Моча:Пор:Электрофорез
Synonyms: Порядковый Точка во времени;Момент
nl-NL Dutch (Netherlands) immunoglobuline lichte ketens.kappa:aanwezigheid:moment:urine:ordinaal:elektroforese
fr-BE French (Belgium) Chaînes légères immunoglobulines.kappa:PrThr:Temps ponctuel:Urine:Ordinal:Électrophorèse
Synonyms: LC LC. Kappa
es-MX Spanish (Mexico) Cadenas ligeras de inmunoglobulina kappa:Presencia o umbral:Punto temporal:Orina:Ordinal:Electroforesis

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