Insulin pens how they work

Inject insulin correctly

The length of the pen needle has more to do with the intended dose of insulin than the thickness of the subcutaneous fat. You don't need to use long 12-millimeter needles just because you are injecting into stronger "rolls". The thickness of the epidermis is the same in slim and fat people. Usually 5 to 8 millimeter needles are sufficient. If you want to inject large doses, around 40 or 50 units, you should use longer needles and inject deeper into the fatty tissue. Small doses can be injected with short needles. In principle, every diabetic can safely hit his subcutaneous fatty tissue with a 5-millimeter needle if he pricks vertically. The slimmer it is, the more important the formation of a skin fold becomes.

2. Use the pen needle only once

Pen needles are sterile disposable products that you should change after each injection in order to inject painlessly and hygienically. The needle is no longer sterile after the first injection and its tip can be bent or blunt. In the evening at the latest, you should unscrew the needle after using it two or three times so that you don't forget the new one the next day. Disinfecting the spray point is not necessary, on the contrary, it is rather inconvenient! If those affected use a cannula too often, you run the risk of infections and tissue changes that prevent the insulin from being absorbed.

3. Select the correct spray point