I have a dentist appointment tomorrow and I'll probably need some work done. I also have a doctor's appointment on Wednesday and I have to take dexamethasone for the blood tests the day before. I think they are checking my glucose levels and cortisol levels. Would the tests be impacted if I get a shot or something at the dentist's office? Should I tell my dentist? I can't really reschedule either appointment. The tests are more serious than the routine blood tests or I wouldn't be concerned. Thanks in advance.