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The O'Sullivan test, also known as the sugar or glucose test, is a medical test that is performed to find out if the pregnant woman has gestational diabetes, that is, if she has developed any degree of glucose intolerance during pregnancy. .
Gestational diabetes is one of the most frequent complications during pregnancy For this reason, it is essential to perform the O'Sullivan test or glucose test in pregnant women to rule out or properly treat this disease.
The O'Sullivan test or glucose test in pregnant women is very simple and consists of a blood test to quantify the blood sugar levels of the pregnant woman. In this case, it is not necessary to go to the test on an empty stomach. After extraction, the woman is given a syrup with 50 grams of glucose and one hour is waited for the body to assimilate it.
After 60 minutes, a second blood test is carried out to quantify the blood sugar levels again. If these are less than or equal to 140g / dl, there is a risk of diabetes and the patient is referred to a second test, known as oral glucose overload or long glucose curve.
On this occasion, the procedure is similar but the syrup contains twice the number of grams of glucose and four blood draws are performed: at the beginning, at the hour, at 2 hours and at 3 hours after administration. If two or more values are equal to or higher than normal, gestational diabetes is diagnosed and the patient is referred to a specialist to monitor the pregnancy. 5% of glucose tests in pregnant women are positive.
O'Sullivan's test performed on all pregnant women –Except for diabetics- between weeks 24 and 28. In the case of women at high risk due to a family history of diabetes, obesity, macrosomia or previous gestational diabetes, impaired glucose metabolism, or age over 35 years, the test It is also performed at the first pregnancy visit and, subsequently, between weeks 32 and 36 of gestation.
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