3 of 5 people found the following review helpful
Upon first opening my bottle of Ketostix and reading the instructions, I realised that all of the sticks are already coloured so as to indicate a negative result. The colour chart suggests that all of the sticks should initially appear white.
Furthermore, when using the sticks they do not change colour from the "negative" result. I am currently on a VERY low carb diet and have been losing fat, so this should not be the case.
After reading other reviews of people's great experiences with these, I can only assume that mine are faulty.