title: Different types of hypercalciuria in patients with renal lithiasis and evidence of the calcium renal waste.
abstract: A study of normal subjects and patients with hypercalciuria and recurrent renal stones has identified three main types of hypercalciuria: complex, absorptive and renal. Complex hypercalciuria is a combination of absorption, renal leak and resorption factors. Absorption and renal leak were examined by means of a 45Ca test. Resorption is defined as an increase of the urinary calcium:creatinine ratio while the subjects are being maintained on an intake of 400 mg of calcium per 24 h.
mesh_terms: D002118:Calcium / Q000378:metabolism / Q000652:urine*; D004231:Diuresis; D006801:Humans; D007408:Intestinal Absorption; D007668:Kidney / Q000378:metabolism; D007669:Kidney Calculi / Q000175:diagnosis / Q000652:urine*; D007677:Kidney Function Tests
chemical_list: D002118:Calcium