Before you inject, make sure there is enough insulin in the cartridge for your injection and check that the expiry date on the cartridge has not passed.
If your insulin is intermediate acting, gently rock the pen up and down or roll it between your hands 20 times to make sure that the insulin is mixed.
Screw on the needle.
Don't forget to use a new needle everytime
Before each injection, make sure that your pen is giving insulin by dialling 1 or 2 units and, holding the pen upright, press the plunger: you should see a drop of insulin on the needle tip.
After the plunger is pushed in, leave the needle in the skin for at least 10 seconds. This will allow the last drops of insulin to be completely injected.
After you have finished your injection, remove the needle by clipping it off with a BD Safe ClipTM and/or place it in a sealable container. Your parents will know what to do about it.