While controversy exists over the most appropriate test for secondary adrenal insufficiency in pituitary disease, recent data suggest good correlation between distinct testing methods, as long as unique normative cut‐off levels have been determined for each (as was the case in both study centres).39 A policy of dynamic testing of GH reserve was not universally applied to the Birmingham cohort pre‐2002. Here, GH1 is linked to Adrenal insufficiency.