Those negative reviews are hilarious
Only gave four stars because they don't tell you  if it changes colors again after 20 minutes or will it stay the final color. It tells you exactly how much you're in to put in there I think believe it says 2/3 and that's including the liquid that you put in the tube. I'm saying these negative reviews are hilarious because people should use their head.. I mean, hello? You're not supposed to collect your urine directly into the tube you're supposed to collect it in something else and then add it with the pipette.
Rating: 4 stars