system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 25 year old male presnents with weakness, occasional vomiting hypotension, skin and mucous membrane pigmentgation. The diagnosis can be best established by -
assistant
The correct answer is  after administration of ACTH , coisol level increases. This can be used as an index of the functional reserve of adrenal gland for production of coisol ( Harrison 17 pg 2252)