All in all, not bad ;-). Gable’s resting cortisol is now back up above 1.5, and his post-ACTH is only a sliver higher than the ideal therapeutic range, and is well within the acceptable range for a trilo dog as long as symptoms are being well-controlled. Remember, that post-ACTH range you’ve listed is not applicable to a dog taking trilostane.
His cortisol levels now are a bit higher than back when he was taking the 10 mg. once daily. But he’s also only been back to taking the trilostane for about ten days now, so his levels may still drop a little more over time.
Re: his thyroid, I see his last reading at the start of April was 2.3 with a normal range of 2.5 - 6.0. This time, he tested at 2.5, so he’s still right at the low end of the normal range. Did the specialist comment on his thyroid level during your appointment? Have you been staying at the same dose since April?
Most importantly of all, how’s Gable been doing, symptom-wise?
Marianne