I've heard of it, but I don't think you really have to. If you have extras it would be worth doing 2 to see if there is a difference... Use the same urine sample and dip one right away and then wait for 15 mins or so and dip the 2nd one and see how they look.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.