The article says: > Of course, there are exceptions. When patients are acutely ill, or changing regimens, or finding that their blood sugar is not well control

The article says: > Of course, there are exceptions. When patients are acutely ill, or changing regimens, or finding that their blood sugar is not well controlled, testing may be appropriate. So about the regimens: unless the patient eats the same every week (same ingredients, same quantities) without any significant variation, it’s still the way to go IMHO. General guidelines can be followed by the patient but usually they don’t have that much nutrition knowledge to judge if a new food is going to hurt them (besides the most obvious sugary stuff). There are exceptions and all that. I supported a member of my family who’s gone from pre-diabetic to dangerous levels of A1c (well beyond “need insulin”, more like “go to the ER right now”) and the regular pricking helped a lot to know what could still be eaten (full keto wasn’t an option). And even this story has a happy end: no insulin and very minimal pre-diabetes medication. Regular pricking still happens when significant (usually healthy) changes in diet happen and it helped to detect what should be avoided. And luckily it’s affordable. Disclaimer: not a doctor, just a nutrition freak.