LOINC long common name : IgM.lambda [Mass/volume] in Serum or Plasma;
LOINC short name : IgM lambda SerPl-mCnc;
LOINC description : Immunoglobulins are made up of two identical heavy chains which define the immunoglobulin
class (A, G, or M) and two identical light chains, kappa or lambda (κ or λ). Each
light chain is bound to a heavy chain. This test measures IgM, but selectively IgM
with a lambda light chain. The assay employs antibodies that target unique junctional
epitopes between the light and heavy chains for each Ig molecule. High serum concentrations
of monoclonal protein may indicate an underlying abnormality such as multiple myeloma,
monoclonal gammopathy of unknown significance (MGUS), or other lymphoproliferative
disorders. [PMID:23211046] This term was based on, but not limited in use to, the
Hevylite Human IgM Lambda assay.;