Acth stim test.my baseline cortisol was 17.5. after 30 min, cortisol =22. after 60 min, =26.i thought cortisol should raise 20pts but i was told normal.?

Perhaps: In healthy individuals, the morning cortisol level should double from a baseline of 20-30 µg/dl within 60 minutes. The baseline cortisol level in people with adrenal insufficiency is usually below 15 µg/dl. An acth stimulation test that raises the cortisol concentration to 20 µg/dl would support the diagnosis. Make sure you have the right units.