Foamy Urine

[alphalau]

I have foamy urine for more than 6 months. I went to urology and nephrology for checkup but nothing abnormal were detected. no protein was found and kidney was good. i went for quite a number of urine test and microscopic hematuria was detected sometime; it's really a off and on thing. I know microscopic hematuria could be caused by strenuous sports but I haven't really played sports recently. i ruled out STD as I tested negative for all major test. the only time i don't see foamy/bubble urine is when i drink a lot of water. what else could be the reason? what else can I do? Doctor said I'm find and no follow up is required, but I am still worried because I feel that there must be a reason.

[alphalau]

i know that's the difference between foamy urine and bubble because when I drink lots of water, I don't see the foamy urine. Even when I try to urinate at the side of the toilet bowel, I can see small bubbles being formed and it stays there. I am wondering what else could cause the foamy urine other than protein? i googled and can't seem to find any answer.

[YardBull]

This depends upon what you relate as "foamy urine".  This may be nothing but bubbles that any guy would see as he urinates into the water in the toilet bowl.  Since your tests came back negative, try to put this aside unless you see/feel other symptoms.