Oh, I didn’t realize that if you had one, you probably have the others so testing for just GAD is good enough. Thanks!
I just got my results back from DirectLabs:
- GAD65 < 5 (reference < 5)
- Insulin Autoantibodies 0.8 (reference < 0.4) HIGH
- Fasting C-Peptide 1.99 (reference 0.8 - 3.8)
- Fasting blood glucose 120 (after injecting that morning to bring down a high)
I had my fasting c-peptide tested 3 years ago, and it was high at 4.7, not sure if it’s coming down due to taking insulin or something else.
I have been on insulin since this January and am not really sure if that IAA test is useful at all in light of that. Any thoughts?
I have a question. I have type 1 and I signed up my kids for trailnet. So they can be screened for the antibodies. I am praying they both come up negative. So on the package it says go in the morning. But my wife and I work so the afternoon would be better. Do you think they would be fine to run bloodwork in the afternoon?
IAA is only a significant finding in those who have never been on injected insulin… almost everyone using injected insulin will test positive.
Honestly with a negative GAD and a normal c-peptide (it would be at the bottom of the range or under if you had LADA or T1) I would let this one go for now - nothing points towards LADA or T1.
C-peptide is a tricky thing - it CAN be artificially lowered when you are taking injected insulin, but yours is still well within the normal range - showing your pancreas is really not having trouble producing insulin.
The need for an AM draw is because the samples have to be shipped out to another lab in a special way. It’s best to contact the lab and make sure it’s fine - it might be, but it also might not be.
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