Evaluate proteinuria (eg, following urinalysis in which proteinuria is detected); evaluate renal diseases, including proteinuria complicating diabetes mellitus, the nephrotic syndromes (eg, lipoid nephrosis, membranous proliferative glomerulopathies, metal poisoning (eg, gold, lead, and cadmium), renal vein thrombosis, systemic lupus erythematosus (SLE), constrictive pericarditis and amyloidosis); work up other renal diseases including malignant hypertension, glomerulonephritis, Goodpasture syndrome, Henoch-Sch?in purpura, thrombotic thrombocytopenic purpura, collagen diseases, cryoglobulinemia, toxemia of pregnancy, drug nephrotoxicity, hypersensitivity reactions, allergic reactions and renal tubular lesions; manage myeloma and macroglobulinemia of Waldenstr?Bence Jones proteinuria); evaluate hypoproteinemia; tubular proteinurias include Wilson disease and Fanconi syndrome.