Question
What if the fasting glycated hemoglobin value is 5.8 at 16 weeks pregnant? Is this value high?
Answer
Hello. The diagnosis of gestational diabetes is made between 24 to 28 weeks of pregnancy. This involves undergoing an oral glucose screening test and a 100-gram oral glucose tolerance test, measuring blood glucose concentrations at fasting, one hour after the meal, two hours after the meal, and three hours after the meal. If at least two of these values are found to be higher than the standard values (fasting, 5.1 mmol/l; one hour post-meal, 10.3 mmol/l; two hours post-meal, 8.1 mmol/l; three hours post-meal, 6.7 mmol/l), gestational diabetes is diagnosed. If only one value is higher than the normal range, it is diagnosed as impaired glucose tolerance.