Addison's Disease
Short Synacthen Test
aka ATCH test
simulates the adrenal response to ATCH
Measure ACTH and cortisol
Give synacthen
Measure cortisol
High initial ACTH and low cortisol = primary adrenocorticoinsufficiency DDx includes steroid atrophy
Low initial with normal response = secondary
aka ATCH test
simulates the adrenal response to ATCH
Measure ACTH and cortisol
Give synacthen
Measure cortisol
High initial ACTH and low cortisol = primary adrenocorticoinsufficiency DDx includes steroid atrophy
Low initial with normal response = secondary