I just received my glucose tolerance test results for testing for gestational diabetes. I had the two hour test with 100 grams of glucose. My results are – fasting glucose: 4.5 mmol/L [81 mg/dl]; one hour: 9.9 mmol/L [178 mg/dl]; two hours: 5.1 mmol/L [92 mg/dl]. From what I’ve read, I’m in the normal range but the 9.9 mmol/L [178 mg/dl] puts me just under the 180 mg/dl [10.0 mmol/L] diagnosis range. Does It look like I have gestational diabetes or not?

You stated that you had a 100 gram, two hour test. Did you mean to say that you had a 75 gram, two hour test? The current recommendation for standard of medical care in diabetes is the 75 gram, two hour glucose test done between 24 and 28 weeks gestation as the method for determining the presence of gestational diabetes. The critical values are fasting glucose greater than or equal to 92 mg/dl (5.1 mmol/L), one hour greater than or equal to 180 mg/dl (10 mmol/L) and two hours greater than or equal to 153 mg/dl (8.5 mmol/L). A single elevated value makes the diagnosis of gestational diabetes. Even though you came close at the one hour mark, your test result did not exceed the threshold value. Thus, you do not meet criteria for gestational diabetes.

OWJ