The first step is to wash your hands with soap and water, pat-dry them with a towel. You can also use an alcohol swab to clean your finger before testing but ensure the fingertip is completely dry before you test Remove the diabetes test strip from the box of strips. Insert it into the slot on the glucometer just before you prick your finger Next, use a clean lancet (a device that holds the needle) or insert a clean needle in the lancet, which can help you to prick the end of your finger