Regarding SD Codefree - there is a comparative assessment of SD Codefree, which was published in Sep 2017 in BMC Research Notes.
The researchers in Ghana took 100 diabetic patients and 50 non diabetic patients and simultaneously measured their blood glucose concentration using SD Codefree (finger prick blood) and reference auto analyzer BT-3000 (venous blood). The conclusion was that SD Codefree is fairly accurate in the whole operational range. The complete article can be found
here.
Looking at the article's results and based on my current one week experience with SD Codefree, it looks that the measured values are slightly and consistently elevated but it should be possible to "calibrate" it for myself - if I had some reference values - how to get them? The trends - highs/lows, increases/decreases - are probably tracked accurately, I don't get too many outliers.
Based what I have read here and on other forums, SD Biosensor had in past for some time problems with QA and some batches of test strips had issues, but it looks that they have finally tuned their manufacturing process and results are overall consistent.
The price of measurement strips is really good.
What is your
current experience?