title: Diagnostic value of urinary cyclic AMP measurement in patients with calcium nephrolithiasis.
abstract: One hundred patients with recurrent calcium nephrolithiasis were submitted to the Pak test. At fasting state hypercalciuria was found in 27 cases, while a group of 16 further patients became hypercalciuric after oral calcium load. Only measurement of urinary cAMP excretion in both conditions made it possible to diagnose renal hypercalciuria in 9 out of 27 patients in the former group; according to test results 4 patients were expected to have primary hyperparathyroidism, but afterwards the disease was identified in only one case.
mesh_terms: D000284:Administration, Oral; D002118:Calcium / Q000008:administration & dosage / Q000652:urine*; D003404:Creatinine / Q000652:urine; D000242:Cyclic AMP / Q000652:urine*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000175:diagnosis / Q000652:urine*; D008297:Male
chemical_list: D003404:Creatinine; D000242:Cyclic AMP; D002118:Calcium