I love the strips, BUT,

recently I bought 3 bottles and put them all in one bottle and tossed the desication pkts away, mistake,

I left the bottle top open, mistake,

now they will not register even thought I KNOW I am in ketosis,

so the lesson learned:

buy fresh bottles, no ones on the pharmasist's counter for months, keep the desication pkt in the bottle, keep the bottle top ON,

and last, do not rely on them.

the color change has been argued for months here and still I see no definitive ruling, seems like hydration must have some correlation,

julienne