Just re-read post 42 in this thread. I think it answers all your questions, and good luck at sorting this out!

Hypoinsulinemic means I undersecrete insulin. You should start by asking for an oral glucose tolerance test (OGTT). If that doesn't look good, then you can get your insulin as well as glucose measured during an OGTT test (they may not be willing to do this right away since the insulin test is more expensive, or they may, you can always ask). A good endo should be able to do this for you.