Urinary cyclic AMP: relation to calcium balance and comparison of assay methods.

Urinary adenosine 3′, 5′-monophosphate (cyclic AMP, cAMP) has been determined in 84 males. Two protein-binding assays were used: the method of Gilman and the Amersham assay kit. The results were in close agreement. The excretion of cAMP was not correlated to urinary calcium or to estimated calcium intake.