2 of 3 people found the following review helpful
Can't tell if it's me,
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This review is from: 100 Professional Ketone MISSION ketone test strip Urinalysis Urine strip tests
These didn't exactly come with instructions so I went with the theory of peeing on it and matching it against the side of the tub. I find that sometimes I wouldn't get a colour change and other times I would but I know they don't work for everyone. If I left it a little while and then checked later sometimes the stick would have darkened but otherwise I found them to be a bit hit and miss for me.