Insulin Injection Sites

Self-administered insulin is injected or infused into the fatty tissue just under the skin. The body areas most commonly used for insulin injections are the abdomen, buttocks, and thighs and the backside of the upper arms may be used as well. These sites are the best to inject into for two reasons:
• They have a layer of fat just below the skin to absorb the insulin, but not many nerves - which means that injecting there will be more comfortable than injecting in other parts of your body.
• They make it easier to inject into the subcutaneous tissue, where insulin injection is recommended.