Glucose Tolerance, 2 hour GT2
One 6 mL gray (sodium fluoride & potassium oxalate) top tube for each specified time.
1 mL plasma at 2-8ºC for each specified time.
Patient Preparation: Patient must fast from midnight the night before the test. Patient may drink water during the test. If the patient vomits the glucose solution after ingestion, the test must be discontinued. No food, gum or lozenges may be consumed during the test.
Procedure: Draw fasting blood sample in 1 GREY TOP TUBE and label the blood sample "FASTING". Administer glucose solution; have the patient drink the entire bottle within 5 minutes.
- Adult Dosage for Men and Non-Gestational Women: 75 grams D-5-Glucose in a flavored drink.
- Dosage for Gestational Women: 100 grams D-5-Glucose in a flavored drink.
- Dosage for Children & Adults Under 95 lbs.: Person's weight in kilograms x 0.175 ounce = Number of ounces of 100g D-5-Glucose drink to administer.
NOTE: To obtain weight in kilograms, divide the weight in pounds by 2.2.
Log times for blood draws:
For non-gestational patients, this test includes a fasting urine screen for glucose and is therefore only collected in designated Patient Service Centers and needs to be scheduled in advance. Please call Customer Service at 315-461-3008 for a list of locations.
|Preferred Specimen Collection Device(s)|