I didn't read anything on the container about them expiring so I appreciate the information. I will throw them away now and try to rely on the weight only. It is just nice to know when I am in ketosis. I did Atkins this summer and I think I was relying too heavily on low carb foods and sweets (and not eating enough protein) so having the strips then helped me see that even though I was not eating a lot of carbs I wasn't in ketosis. I am trying to be very strict this time but I just wanted that confirmation. It has only been six days and I guess I have lost 3 pounds but I want more!! We will see how next week goes.

Thanks