Does urine protein have foam?

If there is foam in urine protein, it needs to be judged according to the following conditions:

Under normal circumstances, the surface tension of urine discharged is very low, and less foam is formed. However, if the composition of urine changes, such as the increase of protein content, it will lead to the increase of urine surface tension, bubbles will increase, and proteinuria will occur. In addition, bladder diseases such as cystitis, diabetes

, etc.