If someone has a fasting glucose level of 5.3mmol/l, is that considered an indication of diabetes or is it normal?

Normal: Fasting blood glucose in adults ranges from 3.9 to 5.8 mmol/L.

Plasma glucose: For diagnostic the test needs to be after an 8 hour fast and needs examination of plasma glucose by an accredited laboratory. Your level is in the normal range. Have a healthy diet, exercise 30 minutes/day, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV vaccine. Wish you good health!