Special Blood Collections: Glucose Tolerance Test

Administration of glucose

  • Collect venous blood for a fasting glucose level.
  • Give the patient a standard dose of glucose, usually in the form of a beverage such as Glucola™ (Allegiance). Always follow your own procedure manual.
  • In general:
  • Give a 50 gram glucose dose to screen pregnant women at 28 weeks for gestational diabetes.
  • Give a 75 gram glucose dose to nonpregnant adults.
  • Give a 100 gram glucose dose to confirm the diagnosis of gestational diabetes.

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