How important is an electrolytes test when an ACTH is done?

Scoop seems to be doing more trembling lately and he was so restless today.
Tonight he drooled out of the one side of his mouth quite a bit. It got his blanket wet. I never saw him do that before. All I ever think about is that horrible tumor in his head and then I cry and get so angry that this is happening to my baby doll.

Vicki-Scoop and Raleigh's mom