Hi All, I am running a CSI type day later on in the year (secondary school based) and am thinking of including some kind of urine test as one of our practicals. Has anybody got experience of doing such things previously? I have tried googling but am just coming up with myriad methods to ensure I pass a drugs test! Thoughts I have had so far is that I might be able to add either glucose or protein to my samples and test for those or alternatively play around with the pH and make the different colours represent the presence of different drugs. Thanks for any help you can offer.