Does anyone know about "Specimen Validity Strips"? These are test strips that can be purchased from www.craigmedical.com. These strips are dipped into the urine sample and will tell you if the urine is too dilute. It tests the specific gravity and creatnin. Why not buy these strips for piece of mind so you know that you aren't too dilute. I would follow N2s dilution method, which can be found on www.marijuana.com then I would drug test myself to make sure I was negative, then do spec. strips to ensure that you did it all correctly. These strips are $35 and have 25 to a box. Just thought I would tell you guys. This way you don;t have to stress all week wondering if you will get that dreaded call from the lab to retest. Good luck