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  • Title: An immunochemical evaluation for the identification and typing of monoclonal proteins.
    Author: Fifield R, Keller I.
    Journal: Ann Clin Biochem; 1990 Jul; 27 ( Pt 4)():327-34. PubMed ID: 2119563.
    Abstract:
    Using automated measurements of kappa (kappa) and lambda (lambda) light chain and IgG, IgA and IgM concentrations we assessed the ability of the kappa/lambda ratio and the heavy/light chain ratio to identify and type monoclonal components which had been previously identified by serum protein electrophoresis and immunoelectrophoresis. We examined 1151 samples, of which 277 contained monoclonal components; 90% of the monoclonal proteins could be identified by this approach, of which 95% were correctly typed. In addition 19 of 874 samples without monoclonal components showed an abnormal kappa/lambda ratio. We assessed the ability of the immunochemical evaluation to calculate monoclonal component concentration and then compared the results to the scanning densitometry of serum protein electrophoresis.
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