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Children's Hospital at Dartmouth Hitchcock (CHad)
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Injection Site Rotation

Rotating your injection sites is very important. When insulin is injected into the same spot repeatedly, scar tissue may develop, and insulin will not be absorbed appropriately. It may not work as it should. Your blood sugars can then fluctuate unexpectedly.

Individual injection spots should be kept about an inch apart. The absorption rate of insulin varies from site to site. Tummy injections absorb the quickest, then arms, legs and buttocks. One recommendation is to use all the spots in one site and then move onto another site. Other sources recommend using the same site at the same time of day (example: breakfast: arms, lunchtime: belly, suppertime: legs, and bedtime: buttocks).

Exercising the limb you just used for an injection can affect the speed at which the insulin is absorbed, and thus may lower your blood sugars more quickly than expected. When planning for exercise, you should avoid injecting insulin into the exercising limb. The insulin may be absorbed too quickly and cause your blood glucose to dive.

Some examples of where to inject when exercising:

  • Baseball/Softball: Tummy
  • Basketball: Tummy
  • Football: Tummy
  • Golf: Leg
  • Lacrosse: Tummy
  • Rugby: Tummy
  • Running: Arm
  • Skiing: Tummy
  • Soccer: Arm
  • Tennis: Tummy
  • Volleyball: Tummy
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