How many weeks should I do the glucose tolerance test?

The glucose tolerance test is the most important item in the prenatal check-up, so it must be done. Because the glucose tolerance test can be used to understand whether the baby's glucose tolerance is above the standard, and this new project can also be used to check the diet in the later stage for further adjustment. So at which weeks of pregnancy should you do a glucose tolerance test? How much is the glucose tolerance standard worth?

How many weeks of pregnancy should I take a glucose tolerance test?

At which weeks of pregnancy should I do a glucose tolerance test? It has been learned that the time for sugar screening is relatively wide, and it can be done from 23 weeks to 35 weeks. The actual decision depends on the condition of the pregnant woman herself.

However, the best time to do sugar screening is 24-28 weeks of pregnancy, because this period coincides with the rapid growth period of the fetus, the metabolism of the pregnant woman's embryo becomes more and more vigorous, and various factors that cause diabetes in the body become more obvious, so it is less likely to be misdiagnosed. On the other hand, if the pregnant woman is found to have glycolysis problems at this time, she can be treated as soon as possible to minimize the possible harm to maternal and child products.

Professional doctors indicate that if a pregnant woman passes a sugar screening test at 24-28 weeks of pregnancy and has no abnormal symptoms, the risk of gestational hyperglycemia can be basically eliminated.

In addition, if the pregnant woman has a family history of diabetes, obesity and other high-risk factors, it is recommended to do sugar screening in advance to the 20th week of pregnancy. This way, it can be determined as soon as possible whether the pregnant mother has glycolysis problems, and treatment can be carried out as soon as possible to minimize the harm of diabetes during pregnancy to the pregnant mother and fetus.

In addition, pregnant women should undergo sugar screening at 24 to 28 weeks of pregnancy. Because this period coincides with the rapid growth period of the fetus, the metabolism of the pregnant mother's embryo becomes more and more vigorous, and various factors that cause diabetes in the body become more obvious, so it is not easy to misdiagnose. On the other hand, if the pregnant mother is found to have glycolysis problems at this time, she can be treated as soon as possible to minimize the possible harm to maternal and child products.

Friendly reminder from the editor: Since the sugar screening for pregnant women requires blood tests on an empty stomach, most hospitals arrange for it to be done in the morning. At the same time, pregnant women should drink glucose water (50 grams of glucose dissolved in a glass of water and drunk within 5 minutes) one hour before the blood test, and the blood test must be done after drinking red bean sugar water for more than an hour.

Glucose tolerance standard value

Each hospital clinic will have slight differences due to the different instruments, methods and reference standards used, but the standard values ​​are basically within this range. The standard value presented by the hospital outpatient department shall be used as the standard.

OGTT results:

1. Normal glucose tolerance: blood sugar <6.1mmol/L; oral glucose takes 30-60 minutes to reach the peak, the highest value is <11.1mmol/L, and it returns to the normal level in 120 minutes, <7.8mmol/L. Urine sugar was negative

2. Diabetic glucose tolerance: blood glucose concentration ≥7.0Mmol/L; blood glucose level rises sharply after taking sugar, with the peak value exceeding 11.1mmol/L, and is still higher than the normal level after 2 hours, and urine sugar is often positive. Among them, the blood sugar level 2 hours after taking sugar is the most important distinguishing indicator.

3. Impaired glucose tolerance (IGT): blood sugar 6.11～7.0mmol/L, blood sugar level after 2 hours: 7.8mmol/L≤2h blood sugar value＜11.1mmol/L

If your blood sugar index is ≥7.8mmol, it means that the sugar screening result is abnormal, and the doctor will conduct a second investigation for you, namely the grape sugar screening (OGTT). Fast for 12 hours before the experiment, first draw blood for blood sugar test on an empty stomach, then add 150mL of 50% glucose injection into 100mL water, or dissolve 75g of anhydrous glucose in 200mL water and drink it within 5 minutes, starting with the first sip, draw blood for blood sugar test after 1 hour, 2 hours, and 3 hours, the standard values ​​are: 5.6mmol/L on an empty stomach; 10.3mmol/L after 1 hour; 8.6mmol/L after 2 hours; 6.7mmol/L after 3 hours.