Hi
@Joshmax123
You need to make yourself familiar with all the different tests we have, both for diagnosis and on our reviews, and what all the numbers mean. It is confusing because there are so many different measurement units, but understanding these will help you. All this information is on this website, accessed from the Home page. Just follow the links.
The main test is the HbA1c and that sounds like the one your nurse quoted as 54mmol/mol.
There is another test, which is a fasting blood glucose test, and had yours been 54 you would be dead, I'm afraid to say. They are usually figures like 6mmol/l or 7mmol/l or 10mmol/l or similar.
There are other tests.
You would do well to ask your surgery if they put test results on-line and if so, register for this. Failing that, ask reception for a print out of your test results - your first ones and your second ones. These will tell you exactly which tests you had and what the results were. They will also have other tests on them, such as cholesterol, lipids, liver and kidney functions, full blood counts and anything else they threw in. You really do need to know all these. Once you get a print out, or see them on-line, anything you don't understand just ask on here and people will explain them.