title: Assessment of hyperphosphatemia and hypophosphatemia.
abstract: Methodologic aspects including causes of factitious hyperphosphatemia and hypophosphatemia are summarized. The differential diagnosis of hyperphosphatemia is reviewed under its three broad causes: decreased glomerular filtration rate, increased exogenous or endogenous phosphate load, and increased renal tubular phosphate reabsorption. The differential diagnosis of hypophosphatemia is reviewed under its three broad causes: inadequate gastrointestinal input, excess phosphate losses, and transcellular shifts. The consequences of hyperphosphatemia and hypophosphatemia are outlined with a focus on pathophysiologic and clinicochemical sequelae. A laboratory perspective is emphasized in outlining management strategies.
authors: Department of Medicine, Veterans Administration Medical Center, Brooklyn, New York.
authors: E
authors: E
authors: Bourke
authors: N
authors: N
authors: Yanagawa
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007674:Kidney Diseases / Q000150:complications; D010710:Phosphates / Q000097:blood* / Q000172:deficiency / Q000652:urine
chemical_list: D010710:Phosphates