Diabetes mellitus is a condition where the body cannot manufacture adequate amounts of insulin needed to metabolize glucose (blood sugar), or the body does not recognize the insulin produced, leading to an excess of glucose in the body in either case. If the condition is not under control, a diabetic may need to introduce insulin artificially into the body by injecting a set dose periodically.
The procedure to be followed to inject insulin
Wash your hands thoroughly and clean the part of your body, where you want to make the injection, with alcohol. Take the bottle or syringe of the correct type of insulin out of refrigeration, and roll it gently between your palms for a short while and do not shake. This helps mix the insulin evenly. Take the precise amount of insulin and tap out air bubbles, if any, from the syringe.
Insulin is known to be best absorbed at the abdomen. Relax your abdominal muscles, gently pinch the area where you want to make the injection between your fingers and pierce the skin all the way to the hub of the syringe needle at a 45 or 90-degree angle, so that the insulin is injected into the fatty tissue of the skin, and not the muscle. Do not inject into the same spot each time. Rotate between different spots on the abdomen, preferably at least farther than an inch from each other.
Once injected, remove the needle in the same angle as of entry. If the site of injection is bleeding, use a cotton swab and apply pressure. It is best to dispose syringes after a single use, as the syringe loses sterility after use and carries a chance of infection with subsequent uses. Keep the insulin bottle back in the fridge as it must be stored refrigerated.