Determination of kappa and lambda light chains in serum immunoglobulins G, A and M.
An enzyme-linked immunosorbent assay is described for measuring kappa and lambda light chains within each of the serum immunoglobulin classes G, A and M. The detection limit was 0.06 U/L for total IgG, IgG kappa and IgG lambda, 0.2 U/L for total IgA, IgA kappa and IgA lambda and 0.5 U/L for total IgM, IgM kappa and IgM lambda. The concentrations of kappa plus lambda light chains from the three different immunoglobulins correlated well within those of total immunoglobulin G, A and M as measured by enzyme-linked immunosorbent assay or by immunonephelometry. Adult values for the kappa/lambda light chain ratio were found to be 2.0 for IgG kappa/lambda, 1.1 for IgA kappa/lambda and 1.7 for IgM kappa/lambda.
Haraldsson
A
A
Department of Paediatrics, University Hospital Nijmegen, The Netherlands.
Kock-Jansen
M J
MJ
Jaminon
M
M
van Eck-Arts
P B
PB
de Boo
T
T
Weemaes
C M
CM
Bakkeren
J A
JA
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D005260:Female; D006801:Humans; D007070:Immunoglobulin A / Q000097:blood; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D007145:Immunoglobulin kappa-Chains / Q000097:blood*; D007146:Immunoglobulin lambda-Chains / Q000097:blood*; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007145:Immunoglobulin kappa-Chains; D007146:Immunoglobulin lambda-Chains