I'm on prednison too now, after my transplant. My sugarlevels stayed ok so they stopped checking them after a while. But 2 weeks after tx, i had to have a course of high dose pred for acute rejection and they checked my sugarlevels again cause they said it could rise from the pred. Luckely it didn't. The highest it got was 8 early in the morning (that is a bit high, should be that after dinner) But it was just ones and after that it stabilised again.