Kappa light chains.free/Lambda light chains.free [Mass Ratio] in Serum by Nephelometry   80517-6

LOINC Code


LOINC code80517-6
nameKappa light chains.free/Lambda light chains.free [Mass Ratio] in Serum by Nephelometry
descriptionAn elevated kappa/lambda ratio supports the diagnosis of a monoclonal gammopathy and requires further investigation. Borderline elevated kappa/lambda ratios occur with renal impairment, and may require appropriate renal function tests. Elevated levels of both kappa and lambda with normal kappa/lambda ratio - may be due to (1) renal impairment (common); (2) Over-production of polyclonal FLC from inflammatory conditions (common); (3) Bi-clonal gammopathies of different free light chain types (rare).
statusACTIVE

Fully-Specified Name

componentImmunoglobulin light chains.kappa.free/Immunoglobulin light chains.lambda.free
propertyMRto  =  Mass Ratio
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemSer  =  Serum
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodNephelometry

Additional Names

short nameKappa LC Free/Lambda Free Ser Neph

Basic Attributes

classCHEM
type1  Laboratory
order vs. observationObservation
example UCUM units{Ratio}
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)
example unitRatio

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

Member of these Groups

LG19433-8Immunoglobulin light chains.kappa.free/Immunoglobulin light chains.lambda.free|MRto|Pt|ANYBldSerPl

Member of these Panels

81632-2Immunoglobulin light chains.free panel - Serum by Nephelometry

History/Usage

test rank5204 of 2000 most commonly performed tests by labs in USA
first released
last updated2.73
last change typeMIN  - change to field other than name
change reasonChanged LCN from 'Immunoglobulin light chains.kappa.free/Immunoglobulin light chains.lambda.free' to 'Kappa light chains.free/Lambda light chains.free ' for readability.

Related Names

Bence Jones protein
BJ Protein
BJP
Chain
Chemistry
FR
Hematology
Heme
Immune globulin
Immuno
Immunoglob
Immunoglobin
Imunoglbon
Imunoglobn
Kappa LC
Kappa LC Free
Lambda Free
Lambda LC
Lambda LC Free
Light scattering
Mass concentration ratio
Mass ratio
MCRto
Nephelom
Non-protein bound
Point in time
QNT
Quan
Quant
Quantitative
Random
Serum
SR

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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