I can't help as I already was diagnosed with diabetes and I'm on insulin. With the infusions I am getting my sugars are out of control because of the solu-medrol with the IVIG.
If I were you I would definately ask for a blood test of my glucose levels and you may need to be fasting for this. Your regular PCP could check this out for you.
Medicine is so specialized that you need a bunch of specialists to sort it all out as they only want to treat or test you for what is in their field. Your PCP acts as the gatekeeper and should find any other problems that you might have. Lots of luck.
Gabriella