Hi Alison, yuk, a heat wave sound ucky

So, making the change from nmol to ug would be as follows:

120 nmol = 4.34ug
400 nmol = 14.49ug

Which if that holds, it sounds like Cairo's cortisol production has kicked back in and he will need a very low dose of trilostane. Lower than where he was before when he crashed for sure.
With symptoms controlled, Dechra likes the post cortisol number to be under 9.0 ug.

Maybe discuss with vet him going onto a low dose. What was he on when he crashed do you remember? I can't go back through the thread right now, but will look later once I'm home.

hugs
Sharlene and molly muffin