Total Daily Dose (TDD)

TDD = all fast insulin taken before meals, plus all long-acting insulin used in a day.

If Humalog (or other fast/rapid insulin) is used everyday to correct high readings, this will also need to be factored into the total daily dose. For instance, if someone’s TDD is “30 units” (5 units before each meal, plus 15 units Lantus at bedtime), but they also need 8 to 12 units more almost every day to bring down highs, at least some of this 8 to 12 units will need to be factored into a new TDD.