Hey, Abby, AnnieB6 here.

http://neuromuscular.wustl.edu/mtime/mepisodic.html

Since you have a very good endocrinologist, why don't you have her put in standing lab orders for a comprehensive chem panel to be done for when you are having these "attacks?" You not only need to see what is going on with your potassium but other electrolytes, glucose, protein, kidney function, etc. Often what doctors can do is put standing orders at a hospital lab, so you can go in anytime of night or day.

A drop in glucose can cause weakness too. Do you have any signs of "reactive hypoglycemia?"

Annie