He knew the general terminology, but wasn't able to know the degree for me (just as a random example--forgive me if I'm slightly off, diabetes blood sugar levels is measured in the 10s and hundreds in the US but from 1-5 in the UK, so the first time I heard someone talk about their blood sugar being a 3, I wondered how they survived )
Yeah in the US and certain parts of Europe, blood sugar levels are measured in mg/dl. But in the UK, Canada, Australia, other parts of Europe, blood glucose levels are measured in mmol/L. So a person without diabetes would in the US have typical fasting glucose levels of 70 mg/dl- 140 mg/dl but in the UK that's 3.8-7.8 mmol/L.
Even the HbA1c (which essentially tells someone their 'average' reading over 3 months, though its not that simple) is slightly different in the UK, though I think after this year it is supposed to become universal worldwide.
So this is quite helpful for anyone with Diabetes to know, as the meters and test results you get in either country are different.
I guess my long winded response is, for anyone, with any condition, its helpful to find out what the actual meaning of your test results are, how they're measured, etc. Usually they say this is best discussed through a GP or Nurse, etc so you don't panic, or misinterpret, etc but if you're me and you're curious and read loads and loads of medical journals ,etc, you just try and bash through it anyways. Lol!