You can have blood in your urine (hematuria) without any pain due ... Renal AMLs are made of blood vessels, smooth muscles, ...

it can back up into the kidneys and cause swelling and tissue damage. Once the stone passes or is removed, the backed-up ...

You should contact your doctor if you notice persistent changes in the color of your urine. An increase in proteins, sugars, and blood cells can change the color of your urine or darken it.

Collagen is a protein that helps form connective tissue. Goodpasture syndrome ... High levels of protein and high numbers of red blood cells in urine may indicate kidney damage.