It is important to remember that even when you are adjusting your insulin dose for what you eat, there will still be times when your blood glucose levels will run higher than it should. During these times you should correct your blood glucose to your individual target as agreed with your diabetes team.
There are guidelines for the correction of blood glucose levels known as the 100 Rule. By dividing the amount of insulin you take each day into 100 you will get an estimate of how much 1 unit of rapid acting insulin will affect your blood glucose levels.
If you take 50 units of insulin per 24 hours, 100/50 = 2
Therefore every 1 unit of rapid acting insulin will reduce your blood glucose levels by 2 mmol/l.
The 100 Rule is also known as your ‘Insulin Sensitivity Factor’. Your diabetes team can work this out for you. Remember that you might need different targets at different times of the day or different sensitivity rates at different times of the day.
Points to Remember:
Calculating a Correction Dose
To calculate a correction dose, follow the equation below:
Actual BG level – Target BG level = Correction Dose
Correction Factor or Insulin Sensitivity Factor
14mmol/l - 8mmol/l = 3 units of rapid acting insulin
Contact your diabetes team for advice if you are unsure.
Points to remember:
The CHOICE diabetes education programme is available in NI and the border counties of Republic of Ireland, ask your Diabetes TeamChoice Programme