I am no expert, but have been doing alot of reading. I can't put my exact finger on which book I read this from, but it read that if you are doing the Low Carb diet and using the sticks, as a guide, you should not want your sticks to turn Dark Purple, as that means YOU ARE NOT DRINKING ENOUGH WATER!

From what that book said it is NOT HEALTHY stage when the stick turns a dark purple. If that should happen................DRINK EVEN MORE WATER !!!! The more water you drink, which is GREAT, the ligher the stick will be or maybe not even turn. But, that is OK, as long as you know you have been eating the correct foods. You still will be losing weight!

Hope that helps someone?
Jo Ann in TEXAS