Interesting. Withings announced a reusable urine analyzer for your toilet bowl at CES, might be cool to see that upgraded with these tests.
Doing several tests a day on someone could create a lot of false positives!
Perhaps if the sensor detected possible symptoms as well: urinating more frequently in the night, difficulty in starting, weak or interrupted flow, blood in the urine etc.
Only if they don't adjust the threshold/filter, properly calibrated you'd expect false positives to be reduced.
Hopefully something like this comes to the US at some point.
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The number of pee jokes I've experienced in the past 20 minutes of looking into this thing have been delightful :-D