Image: Quincy, Illinois Family Medicine Residency Program
Image: 612 N. 11th, Suite B, Quincy, IL, 62301, 217-224-9484, Fax: 217-224-7950
Email link: quincyfpinfo@siumed.edu
Memory Joggers: Glucose Tolerance Values (Oral)

ADULT NONPREGNANT (75 g dose)
  • Fasting: 70-105 mg/dL
    (> 60 years: 70-115 mg/dL)
  • 30 min: 110-170 mg/dL
  • 60 min: 120-170 mg/dL
  • 90 min: 100-140 mg/dL
  • 120 min: 70-120 mg/dL

Diabetes Mellitus:
Fasting > 126, 120 minute and one other sample(30,60,or 90 min) > = 200 on more than one occassion OR fasting > = 126 on more than one occassion OR random > 200 and symptoms


ADULT PREGNANT (50 mg dose)

  • (24-28 weeks)
    1 hour: <140 mg/dL

  • Perform 3 hour glucose tolerance test if 140 mg/dL value is exceeded.
    Fasting: 105 mg/dL
    1 hour: 190 mg/dL
    2 hour: 165 mg/dL
    3 hour: 145 mg/dL

Gestational Diabetes:
Two or more values are exceeded.

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