Well it's not like you are able to see little protein particles (as far as I know) but foamy urine indicates protein. This is what the nephrologist told us.
It is probably too much beer; don't worry about it. (JK - I don't know)
Since we are on the subject, your pee (good pee) should be yellow.I remember teasing my ex-husband because his pee was yellow and mine was clear that I drank only water and "not all that pop."Not knowing "anything" about renal failure at the time. I also boasted about "finally" sleeping through the night without having to get up and pee. ........man was I shocked when they told me I had renal failure.
Now in the morning i wake up my urine is yellow then after i drink Lot of water in a few hours i will go to the bathroom it is almost clear cause of all the 9 glasses of water a day i Drink cause my regular dr tells me when i have a UT to drink a lot of water to avoid them and also to help them if i have a UT.That i guess is why my urine is almost clear sometimes. Kathy