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Tuna try this at home.
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The Urine Test Pellet is a no muss, no fuss way to test for a myriad of conditions, including (but not limited to) pregnancy, drug use, and bladder infection. Simply drop a pellet in the bowl of the toilet, then urinate right into the commode. A chemical reaction will cause the water in the bowl to
change color based on the results. Then you just flush your whiz away! This saves the potential pitfalls of those pregnancy test sticks (peeing on your own hand, being left with a urine-soaked stick) and pee-in-a-cup-tests (again, peeing on your hand, being left with a big cup full of urine).
seems very close to this one [krelnik, Oct 04 2004]
||Problems: Dilution; interference from the chemicals already in the toilet; it's really not that difficult.
||Excessive dilution would only cause results to be too faint...those with very light or invisible results would be advised to test again using two tablets. As for the chemicals, the newly invented pre-pellet neutralizer tablet would render chemicals and microbes commonly found in toilet water inactive.