Question about Urine

samsungpression

Okay...now sometimes I will pee in a cup and leave it for a day or two...just to analyze it. I then wash the cup out with just water...but after doing this for an extended period of time...the rim of the cup gets a white stain or mark on it. Could this be due to left over residue from my urine...or something I should worry about? Please help

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Shanna707

samsungpression
I DONT UNDERSTAND WHY YOUR DO9N THIS RS

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Jhnmarton

Urine contains salts which from being left in the jar sedimentate on the walls of the jar.
That is what the white mark is all about.

I would not call that a test of urine.. It is more like a strange habit)

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