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Adjusting insulin

  • Throughout a lifetime insulin requirements will change and doses will need to be adjusted accordingly in order to keep blood glucose levels within the target range. Growth, sport, activity, lifestyle, and food all play a part in affecting BGLs.

    To maintain good diabetes control it is important to adjust insulin doses when BGLs start to drift outside the target range.

    Your target BGL is 4.0 mmol/L - 7.0mmol/L

    BGL record book to record readings

    Tips for adjusting insulin:

    • Do not adjust insulin because of a single high or low BGL
    • Look for patterns in your BGLs over a minimum of 3 days
    • A BGL out of target range 3 days in a row, or 4 times in one week at the same time of day, is a good indicator that the insulin doses should change
    • Wait 3 days to assess the effect before making a second change

    The below guide applies to adjusting insulin for injected insulin using either multiple daily or twice daily injections

    This advice does not apply if your child is sick or unwell. If your child is unwell please call 9345 5522 and ask for the diabetes sick day service. 

    Calls for non - urgent advice are to be made to 9345 6661 8:30am - 4pm Monday - Friday 

    Adjusting insulin for 4 Injections per day (Multiple daily injections/Basal Bolus)

     For hyperglycaemia (high blood glucose) at:

    •  Breakfast or over night

            Increase your Optisulin® (glargine/Lantus®) / Levemir® by 1-2 units

    •   Lunch or morning tea

             Increase your breakfast dose of Novorapid® / Humalog® by 1-2 units

    •   Dinner or afternoon tea

             Increase your lunch dose of Novorapid® / Humalog® by 1-2 units

    •   After dinner or before bed

              Increase your dinner dose of Novorapid® / Humalog® by 1-2 units

    For hypoglycaemia (low blood glucose) at

    • Breakfast or over night

            Decrease your Optisulin® (glargine/Lantus®) / Levemir® by 1-2 units

    •   Lunch or morning tea

             Decrease your breakfast dose of Novorapid® / Humalog® by 1-2 units

    •   Dinner or afternoon tea

             Decrease your lunch dose of Novorapid® / Humalog® by 1-2 units

    •   After dinner or before bed

             Decrease your dinner dose of Novorapid® / Humalog® by 1-2 units

    Adjusting insulin for 2 Injections per day (BD) insulin regimen

     For hyperglycaemia (high blood glucose) at-

    • Breakfast or over night

           Increase your dinner dose of Levemir® by 1-2 units 

    • Lunch or morning tea

           Increase your breakfast dose of Novorapid® or Humalog® by 1-2 units

    • Dinner or afternoon tea

         Increase your breakfast dose of Levemir® by 1-2 units

    •   After dinner or before bed

          Increase your dinner dose of Novorapid® or Humalog® by 1-2 units

     For hypoglycaemia (low blood glucose) at-

    • Breakfast or over night

           Decrease your dinner dose of Levemir® by 1-2 units

    •   Lunch or morning tea

           Decrease your breakfast dose of Novorapid® or Humalog® by 1-2 units

    •   Dinner or afternoon tea

          Decrease your breakfast dose Levemir® by 1-2 units

    •   After dinner or before bed

           Decrease your dinner dose of Novorapid® or Humalog® by 1-2 units