- Fasting glucose level -100-126 mg/dl
- Family history of diabetes mellitus
- Unexplained retinopathy, neuropathy
- Nephropathy, hypercholesteremia, diseases of coronary vessels, peripheral vascular disease, cerebrovascular diseases, especially in adults under 50 years old.
- Glycosuria even if blood glucose level is normal.
- Spontaneous abortions, premature birth, abundance of water at pregnancy, still birth, big fetus, history of gestational toxicosis.
- Gestational diabetes
- Reactive hypoglycemia
- Glucose 75 g + water 300 ml shall be orally administered during 5 minutes with subsequent measurement of blood sugar: at once, 1 hour later and 3 hours later.
- Within 0-2 hours – >200 mg/dl – diabetes
- Glucose level within 140-199 mg/dl – glucose intolerance (attention should be paid as diabetes is diagnosed in 40 % of cases).
- Glucose level within 140-199 mg/dl and fasting glucose level within 100-126 mg/dl – impaired glucose tolerance
- 3 hours – glucose level < 60 mg/dl – reactive hypoglycemia.