[Investigation of cyclic renal adenosinmonophosphate (yamp)-excretion in pseudohypoparathyreoidism (author's transl)].

Report on a boy aged 6-1/2 years with pseudohypoparathyroidism. This is due to a genetic lack of PTH inducible adenocyclase. Even during vitamin D treatment renal camp formation by giving PTH extract cannot be stimulated, while in this situation. PTH shows a clearly phosphaturic effect. Whether this is due to a PTH potentiated vitamin D effect is discussed. The assay of camp in urine before and after stimulation with PTH extract has proved the most certain diagnostic criterion.