Normal values for the GTT can vary slightly depending on the laboratory, but generally: - Fasting: less than 95 mg/dL - 1 hour: less than 180 mg/dL - 2 hours: less than 155 mg/dL - 3 hours: less than 140 mg/dL
Values higher than these thresholds may indicate gestational diabetes or another form of impaired glucose tolerance.
