SN Instructed on Glucometer testing: Clean your hands and sampling area. Use hot water and soap to wash your hands. Clean the finger you’re going to prick with an alcohol swab, or with rubbing alcohol on a cotton ball. Assemble the device. Insert a test strip into the glucometer, ensuring your insert the proper end inward. Insert a lancet into the lancing device you use to prick your finger. Wait for the glucometer to prompt you for a sample. A readout on the glucometer will tell you to put the drop of blood on the strip. Test your blood sample. Prick your finger with the lancing device. This usually causes no, or very minimal, discomfort. Wait for your results. The glucometer will start to count down in seconds until your results are ready to read. Read the results. The results will show up on the digital screen of your glucometer. Results will vary depending on what time of day it is, how recently you ate, and what you ate.