I just couldn't leave it at that because PPID is not a stagnant disease. Horses' ACTH levels fluctuate all year long, particularly in late summer/early fall. So I asked more questions. What do we do when ... ? What do we do if ... ? When should we check ... ?
Our plan is this: if Speedy has one late summer/fall abscess, we start watching him closely. If he has a second one, we re-test his ACTH levels and go from there. If he has no abscesses, we still recheck his bloodwork in late winter to get a new baseline for the next year. We'll adjust his medication based on that number.
With his numbers back in the normal range, I should be really happy, and I am, but I also want to keep ahead of things so that we can avoid those pesky abscesses. Future worries aside, the number 24 is a great thing to see.