Future being diabetic person. Unfortunately, this is often the only tests doctors employ. Glucometer — This analyze uses an inexpensive machine (glucometer) to prick your finger and analyze the blood on a lancet strip. A doctor’s purchase is not required. Try out your blood sugar quickly and almost painlessly any moment you like, but ideal periods are first thing in the morning (fasting blood glucose), just before lunchtime, and one, two, and three time after lunchtime.