I see a lot of problems in this article.
Â
First, the one hour test is not typically done fasting as this article suggests.
Â
It also suggests that no pregnant woman should ever be fasting for 8 to 12 hours. But that's ridiculous. The vast majority of all pregnant women fast this long every night while they sleep with no ill effects. And if fasting that long is putting a woman into serious starvation mode and making her hyper sensitive to sugars in the morning, that's something that she should know -- something that a GTT would tell them and monitoring would let them keep on track of -- so that she doesn't get up every morning, eat pancakes with maple syrup, and drive up her blood sugar.
Â
It suggests some alternatives. The two hour PP being my favorite of the ones provided. But it has it's problems, too, just like a standard GTT. Anyone who has actually been through a GD pregnancy will tell you that not all carbohydrates are the same. I can eat fruit without any problems, but an equal amount of carbs from grain will spike my blood sugar.
Â
This is why, for the most part, doctors prefer glucola. It's standard. It's a known quantity.
Â
Also, I think you can easily miss problems by testing just at a two-hour period. For a diagnostic test, your blood sugar should really be monitored more frequently than that. At the least, at a one hour period and then again at two (just like they do with a GTT). If I only looked at my blood sugar at two hours after meals, I'd have never known that I had a problem. Mine spikes between 45 minutes to one hour after eating. And if I had only looked at my fasting number, I really would have never known!
Â
The random blood sugar test is useless, in my opinion. Doesn't tell you anything.
Â
And the A1C, while helpful in maybe spotting pre-existing diabetes that had gone undiagnosed, is likewise utterly useless for diagnosing GD which only develops part way through pregnancy. The A1C will tell you what's been happening for the past three months, and by the time GD would be reflected in that number, it would be far too late to do anything about it.
Â
The article also suggests walking 1 to 3 miles during your GTT. But no lab worth their salt will let you do that since it violates the test parameters.
Â
Anxiety, stress, and illness do have a temporary effect on blood sugar...so that is true. But it is unlikely that a person with a normal insulin response is going to see enough effect by merely fretting over their test to fail it by a considerable margin on that basis alone. Not unless there's some other confounding factor at work in addition. Age, race, activity level, and diet do have an effect too. But they are accounted for in that those things are all typically considered "risk factors" for developing GD.
Â
The article quotes a doctor as complaining that the "pregnant body is not recognized as being different from the non-pregnant body and is therefore not expected to function within different parameters of normal." Which is not true. There ARE different levels used for GTTs done on pregnant and non-pregnant people. And the differences between the normal blood sugar levels of a pregnant and non-pregnant woman are known and applied to how GD is currently treated and diagnosed. (Blood sugar levels, according to a study my GD nurse recently cited to me, in non-GD women tend to be lower than what that person experienced before pregnancy since the baby is now using a portion of the sugars they are consuming as well.)
Â
The same quote also lists a lot of factors that could result in a "false positive," most of which are things that really ought to be monitored anyway. Decreased insulin production or increased insulin resistance is a problem no matter what's causing it.
Â
There IS a good point in there, however, about the lack of consistent standards in testing. Too many labs do it differently.
Â
Then there's the factoid: "75% of patients shown by the GTT to have impaired glucose tolerance never actually develop diabetes" which the author contends means the test is only 25% accurate. But that's like saying that blood pressure readings must be inaccurate because only a small portion of those people who test high go on to develop heart disease. Impaired glucose tolerance can stay at a non-diabetic level for years and never become full-blown diabetes, especially if the person takes steps to avoid it.
Â
In any case, I don't see how that's related to detecting GD anyway.
Â
And the line that made me sit down long enough to type this all out: "At the end of the day, there’s still the controversial debate: is there such thing as gestational diabetes after all?"
Â
YES. There is.Â
Â
Â

Saw this article today & this seemed an appropriate place to post it in case anyone thought they might be wrongly diagnosed or wanted to find other ways to check their diagnosis.
Â
The Inaccuracy of the 1 hour Glucose Tolerance Test
Â
I was "borderline" with the 1 hour test in my first pregnancy, but using a glucometer I'm finding that my numbers are actually low or low normal.
Â


















