Sending lots of that things are not as dire as your Dad is thinking. As someone mentioned a few posts back, perhaps the urgency is precautionary, perhaps it's about getting a med changed sooner rather than later. It's hard not to envision the worst, though, so calming too. I guess you'll be hearing before too long, given the time.
Thanks,
His Kidneys are very bad and his diabetes is out of control. His numbers were very bad. He also has a enlarged prostate. He got new Medicines and has to have some tests. I am not sure if they are changing his Thyroid meds.