Pro Living Keto Most patients use alcohol-based disinfectant wipes or alcohol-based chemicals to clean their finger before pricking. Instead, try only soap and water. Alcohol has astringent properties, which tightens the skin and makes it difficult to obtain a blood sample.By taking daily measurements, it's easy to get used to using the same finger and the same place on that finger - to test your blood sugar. This leads to calluses and scars. This is often overlooked by patients because the skin is thicker and the pain less noticeable. Therefore, it is worth making finger punctures on the sides, each time using a different finger. Taking a blood sample from the thumb is quite embarrassing. https://www.t3energyservices.com/