text: Light chains are better tested with a freelite test:\n\nA serum-based assay called FREELITE™, which detects and quantifies free light chains (those not associated with intact immunoglobulin), has recently become available. Evidence suggests that this test may help predict the risk of progression from monoclonal gammopathy of undetermined significance (MGUS) to multiple myeloma. More information on FREELITE™ is available at http://www.bindingsite.co.uk/freelite.asp. \n\nIGG is better tested with a SPEP serum protein electrophoresis to get exact levels - more IGG, more "active MM is"\n\nNot sure of "by page" reference.\n\nJewells\n27 months and still here