Hemoglobin A1c (HbA1c)

  • A Hemoglobin A1c (HbA1c) measures a persons blood sugar average over the past 2-3 months.

  • A normal HbA1c level is below 5.7%. A level higher than that can indicate pre-diabetes or diabetes.

  • A CDL driver with a diagnosis of diabetes may be certified to drive a commercial vehicle during their DOT physical exam for up to 12 months if their diabetes is stable.

  • Our office will ask any CDL driver or T8 School Bus Driver with a diagnosis of diabetes to bring a Hemoglobin A1c result from their doctor that is dated within the past 90 days when they come for their DOT physical exam.

  • If the driver does not have a recent HBA1c in the past 90 days our office offers the test, which takes 15 minutes, in our office for $40.

  • CDL Drivers and T8 School Bus Drivers with a diagnosis of diabetes who are treated with insulin will need to have their physician complete a separate insulin-waiver form before they can be certified by our office to drive. You can find a link to the form by clicking [HERE].


Hemoglobin A1c, HbA1c, Glucose, blood sugar test. DOT Physical Exam, DOT Driver Physical. T8 Transportation School Bus Driver Exam