What is glucose tolerance test for pregnant women?

1. What is a glucose tolerance test?

1. If the expectant mother's sugar screening results show high risk, doctors will generally recommend continuing to do a sugar tolerance test - a glucose tolerance test, to confirm whether she has gestational diabetes.

2. Glucose tolerance test, also known as glucose tolerance test, is a laboratory test method for diagnosing diabetes. There are two main types: intravenous and oral. The intravenous glucose tolerance test is suitable for special patients such as those after gastrectomy or malabsorption syndrome. The oral glucose tolerance test (OGTT) is the most common clinical examination method.

2. Why do we need to do sugar screening?

1. Currently, about 10% of pregnant women suffer from gestational diabetes, and the prevalence has been increasing rapidly.

2. Although a variety of reasons can lead to abnormal sugar metabolism, the human body usually may not show obvious symptoms, and even fasting blood sugar is normal, so it is ignored by many pregnant women.

3. Gestational diabetes has serious adverse effects on both pregnant women and fetuses:

(1) For pregnant women, this disease may cause hyperglycemia, hypertension, and other symptoms.

(2) For the fetus, it increases the risk of various diseases such as fetal miscarriage, intrauterine growth retardation, malformation, macrosomia, and low birth weight. It is also easy to cause a variety of neonatal complications, such as hyperbilirubinemia, respiratory distress syndrome, etc.

(4) It also affects the future life of pregnant women and fetuses, and they are at a greater risk of developing such diseases than ordinary people.

3. What is the normal glucose tolerance of pregnant women?

Normally, blood sugar concentration rises rapidly within 1/2 to 1 hour after taking sugar, and returns to the fasting level after 2 hours. If it does not return to normal levels 2 hours after taking sugar and the urine sugar is positive, it means impaired glucose tolerance.

Normal value of blood glucose tolerance for pregnant women (75g OGCT):

1. Fasting blood sugar. Normal value range: ≤5.1mmol/L

2. 1 hour blood sugar. Normal value range: ≤10.0mmol/L

3. 2-hour blood sugar. Normal value range: ≤8.5mmol/L

Abnormal risk: If the value of any of the above three items reaches or exceeds the critical value, gestational diabetes can be diagnosed.