The oral glucose tolerance test is administered using premixed beverages with a standard concentration of glucose.
Volume: 10 ounces (296 mL)
Total Glucose Load
5 grams per ounce
50 grams per bottle
screening a pregnant woman
7.5 grams per ounce
75 grams per bottle
nonpregnant adult or pediatric patient
10 grams per ounce
100 grams per bottle
diagnosing a pregnant woman
The dose for the nonpregnant patient is
glucose load in grams =
= MIN(75, (body weight in kilograms) * 1.75)
The equation is needed for body weights up to 42.8 kg after which the 75 kilogram is given.
The beverage comes in different flavors (orange, cola, lemon lime) but can be difficult to swallow. Keeping the beverage well-chilled can make it more palatable.
Ideally supplies of each type of glucose beverage should be available. However, sometimes it is necessary to make do with what is available.
50 gram dose
75 gram dose
100 gram dose
5 g per oz
7.5 g per oz
10 g per oz
• Giving 20 ounces of a 5 gram per ounce solution would be too much for many pregnant patients to swallow.
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Purpose: To dose a glucose containing beverage for an oral glucose tolerance test.
Specialty: Endocrinology, Clinical Laboratory
Objective: dosage adjustments