2 hour GTT?
I wish I knew the name of the test, but my midwife this time uses a new blood test. It looks at another part of your blood that tells them how your body is metabolizing sugars over a long period of time. Not just 2 hours after having you drink a weeks worth of sugar. It is much more accurate and there is no nasty drink to make you sick. Maybe research it or ask your provider. Good luck!
The test the PP is referring to is the Hba1c which is a sort of average of your BSLs over the last 2 months. Unfortunately it isn't useful as a diagnostic for gestational diabetes. GDM usually develops around 26-28 weeks gestation. Add 8-9 weeks to this and you are 36-37 weeks pregnant. Not much point diagnosing GDM at term when it's too late to do anything about it.
The GTT is certainly not without it's faults but it is the most reliable diagnostic we have at the moment. The only real alternative IMO is to assume you have GDM and act accordingly - check your BSL four times a day (before breakfast and 2hrs after each meal) and adjust your diet to maintain them below the target numbers.
Yes, but is anyone at all familiar with this new 2 hour GTT? 75 grams of sugar, not 100. Two hours, not three. I'm wondering about the new thresholds. But I haven't seen anyone else talking about this supposedly new, improved test. My providers, like I said, eliminated the 1 hour screening tool. Everyone has to take this 2 hour test and if you fail even 1 hour, you have GD. I find that incredibly strict.
The reference ranges for both diagnosis and managemt have recently been lowered as tighter glycemic control has been found to improve outcomes. This is happening across the board. Not just for GDM but for patients in ICU etc as well.
And yes, there also seems to be a move away from the use of screening tools, such as the GCT and risk factors, and testing everyone instead. I imagine it is partly cost driven (in the case of the GCT) and partly in response to the increasing rates of diabetes amongst all population groups.
For some people I guess it's no big deal. But for someone like me it can take over your life. I have a busy family and have no wish to plan my day around the clock in 2-3 hpur increments.
Here is a blog post about a conference on diagnosing gestational diabetes. It's a lot to go through, but I think it has some of the information you're looking for.
My evening job is for a lab, and we do the 3 hour GTT test all the time (we have a HUGE OB/GYN dept in the clinic). Moms are always failing the first hour, even if by a few points, and then they are stuck coming back for the three hour. I also personally had to do this with my first two kiddos (here's to hoping I will pass the 1 hour with this pregnancy!) The "normal" reference range for the one hour is pretty strict. I think your clinic actually may be saving moms a lot of time with skipping right to the 2 hour GTT! Fewer needle sticks and fewer visits for those who have to take two tests vs. one.
The 2 hour basically skips right to the information to properly diagnose the condition, not just screen to see if it's a possibility like the 1 hour. I think lots of moms who did have GD also do this test after giving birth to see if they are still having issues.
I totally understand the stress of having to fast first and make time to come in, though. If you still have to take it...is there a lab open on the weekends that you could go to? We have that here at my clinic, and moms are so thankful to not have to mess with their busy week in order to get this test done.