I hadn't heard of these. If my son gets a diet coke and it doesn't come in the can or bottle, he checks it with his glucose meter by putting a drop on a BG testing strip. Diet coke shows as LO or a meter error. Normal coke is about 16 mmol.
Very true. We don't eat out very often, in fact it's a rare treat! 🙂I suppose it depends on how often you are likely to need to do it. A blood test strips costs about 30p to the NHS, whereas a diastix costs about 10p to the individual. Costs will go up for the Diastix though if you don't use the lot within 6 months after opening (I think, if they are anything like ketostix, although they may still be usable for the purposes of testing drinks after this 🙂)