Reference Values

65-99 mg/dL (fasting)
<140 mg/dL (3 hour)

CRITERIA FOR DIAGNOSIS OF DIABETES MELLITUS
1. Symptoms of diabetes mellitus and any of the following on 2 different days during the oral glucose tolerance test as per World Health Organization specifications:
≥200 mg/dL (casual plasma glucose)
≥126 mg/dL (fasting plasma glucose)
≥200 mg/dL (2 hour plasma glucose)
2. Acute metabolic decompensation with hyperglycemia
GESTATIONAL DIABETES
Two or more of the following glucose concentrations met or exceeded using a 100 g glucose load:
95 mg/dL (fasting)
180 mg/dL (1 hour)
155 mg/dL (2 hour)
140 mg/dL (3 hour)
IMPAIRED GLUCOSE TOLERANCE
100-125 mg/dL (fasting)
140-199 mg/dL (2 hour)