Glucose Tolerance, 3 Hour (Pregnant)

Performing Lab: Central Lab, Hudson, Lakeview, Regions, Sartell, Westfields

EP3321

Sunquest: GTT3P

0.2 mL Lithium Heparin Plasma (light green-top) tube

0.1 mL

Serum separator (gold-top), Lithium Heparin (light green-top) on ICE, Red, Red/Gray

Glucose Tolerance testing involves administration of a glucose solution. Contact performing laboratory for instructions on administration, collection and test performance

Refrigerated

Room Temperature: 24 hours
Refrigerated: 7 days
Frozen: 1 year

 

Samples not removed from cellular material within 30 minutes, hemolysis

Hospital: Daily
Clinics: Monday - Friday

Same day.

Fasting: 70 - 95 mg/dL
1 hour: 70 - 180 mg/dL
2 hour: 70 - 155 mg/dL
3 hour: 70 - 140 mg/dL
Critical Low: <= 50 mg/dL
Critical High: >= 450 mg/dL

During pregnancy, about 4% of women with no prior history of diabetes will develop gestational diabetes. Although it can occur at any time, most cases will develop during the later part of the pregnancy. If increased blood sugar levels in the pregnant woman are uncontrolled, they can cause the fetus to increase in size and weight. They can also cause the baby to be born with very low glucose levels and to have breathing difficulties. Most women are checked for gestational diabetes between 24 and 28 weeks of pregnancy. For those with gestational diabetes, diet control and/or insulin injections throughout the rest of the pregnancy may be required to bring glucose levels down to normal levels. In most cases, gestational diabetes will go away after delivery, but women who have gestational diabetes will be at an increased risk of having it again with subsequent pregnancies and of developing type 2 diabetes in the future.