There is not really an official type 1.5 or LADA category. They are both type 1. LADA is a description used that means Latent Autoimmune Disease in Adults, meaning you get it later in life versus being a kid and it almost always progresses at a much slower pace. They do think you are not as insulin sensitive as when a kid gets it. That I know of Type 1.5 is hardly used anymore as who knows what it really means??? It was just a description to explain all these adults getting type 1 and there was a prevalent theory it was a kids thing, all these adults were etc, so lets make a new category to dump them into, but what does it really mean. There are all sorts of theories out there, one is getting it before the age of 7 is even slightly different.
I have heard type 1.5 to be used as a description for the person that doesn’t make insulin but has no antibodies. And that’s the problem and that’s why it’s not an official designation. . Type 1 or type 2, RH or Mody I think are pretty much the official categories.
But the basic is a type 1 has antibodies that attack the beta cells and they have to end up having insulin to stay alive. And as an adult it’s usually slow onset, so that process can take years, 8 years or more to completely happen. 40% of us are misdiagnosed as a type 2 at first, Lifestyle changes, medications work at first because we make insulin for a while are some reasons we are misdiagnosed so much, And then they see an overweight person and just automatically think type 2.
A C-peptide test tells you how much of your own insulin you are making. Low or low normal is a sign of type 1 as you are losing or have lost the ability to make insulin. High or high normal is a sign of type 2 because you are insulin resistant and making extra to try to compensate. However some type 1’s don’t make insulin and don’t make antibodies and they don’t know why. And there seems to be some other forms. There is also Mody which is a little stranger and you might read upon that.
You can also be insulin resistant and a type 1. A type 1 has lost or is losing the ability to make insulin. Insulin resistance happens because the cells can’t use insulin well. You have the anti bodies which means though that you are eventually going to lose the ability to make insulin yourself.
Honestly I would get copies of your blood work, your antibodies and your C-peptide. What one doctor says is plenty, another might not say that. Not only is it good to have a copy for your records, but that way you can judge for yourself how your body is doing.
A type 1 classification can also be very important for insurance reasons. As a type 1 we qualify for CGM’s and pumps and misc much easier. Waiting and classifying it into stages is something I have never heard of before. Possibly waiting to see what is going on because you produce plenty of insulin I could understand. But again I would get your results so you can tell what that plenty means.
One of the problems is they see a person as overweight and high blood sugars and automatically go you’re type 2 without testing. Then they pile insulin into you and that makes you insulin resistant. But one theory is that insulin can save your beta cells for longer too. But that is a long time to have plenty of beta cells still. Get copies of your tests.