Hi,
18/20 mmo/l metric glucoes measurement not the scale US uses. I did know the conversion but time and memory loss, I think 200 was around 20mmo/l, don't quote me on that though. I'm so used to the high glucoes levels it is not until I breach 20mmo/l that I start having symptoms. By the same token when I drop between 4/5mmo/l I have some serious symptoms not usually seen until below 4mmo/l with most people. The guide line is 4/7mmo/l with up to 9mmo/l 2 hours after food. Oddly when I drop into hypo state the rapid acting glucoes tablets take over an hour to start working with me. All the times I have checked my glucoes levels when I'm having serious symptoms, glucoes has not been the problem, that was always the first test I went for then BP testing and finally oxygen levels neither relating to symptoms at the time. When I start struggling for breath yes the oxygen levels are down slightly.
Patches are exceedingly expensive here, residing outside US now, never mind the instrument cost itself. Aside from that I have taken myself off insulin and no longer check glucoes levels. I'm betting Dysautonomia and my digestive system will kill me before diabetes or kidneys get a chance.
Cheers