"Industry Standard" is plus/minus 20%

So if your actual blood sugar was say 140 (7.8) then plus/minus 28 (1.6) would be considered "close enough" for a home monitor meter - which sound "way too far off" to me.

However, most meters now are accurate within 10% which is still a "fair bit of error" if you are like me and track all your numbers super close - I consider a change of say 0.5 mmol/l (9 points) from my average FBS to be something to try and figure out "why" I am so FAR from average/typical - but in reality that would be within the accuracy of the best meters on the market (a good FBS of 5.5/99 would have an error rate of 0.5/9 points).

I discussed this with the diabetes specialist. His advice was don't get fixated/obsessed with your numbers if they are "in range" even if they are a little above average.

I had to stop testing for a few days as my fingers were puffy and kinda swollen

Ive gotten different reading off same hand and finger within a minutes of each test. Got really tired of stabbing my fingers and just so happens my dr suggested a cgm. And i love it (fingers love it tooo)

I don't know the cause; but, I can get different readings on each finger of the same hand. Perfectly "normal". Our FBS is not completely accurate, it is just a guideline to show us where we may be a little high or a little low. A1C is far more accurate.

Stephen - my machine is about 2 years old