The One‐hour Synthetic Corticotrophin Test for Rapid Assessment of Adrenal Function

SUMMARY In the last 18 months more than 200 one‐hour intramuscular “Synacthen” tests have been performed without side effects. It has been found to be a valuable screening test of adrenal responsiveness when iatrogenic adrenal insufficiency is suspected. We have found the one‐hour response to be a more reliable index of adrenal function than the half‐hour response used by previous workers.