Notice that my baseline in
the afternoon was lower than in
the morning. This is because the body requires high amounts in
the morning, and supposedly, pumps up a 2nd smaller shot in the afternoon. The interesting thing is that the number never doubles in 30 or 60min. Primary adrenal insufficiency will show high resting ACTH levels. You want to get an ACTH draw before the 0, 30, and 60 min Cortisol draws.