 [ Symptoms ] can a tetanus shot cause blood sugar to go up  7 months ago i had blood work checking the last 3 month of sugar level and it was 98 monday of this week i had an tetanus shot and the next day my blood sugar was all over the place 122 up to 265 can it have to do with the shot [ Disease ] no your elevated blood sugars have nothing to do with a tetanus vaccine people develop diabetes over time and the timing of the tetanus vaccine was just a coincidence