Last month I noticed some blood in my urine. I thought it might be due to premenopausal bleeding, but didn't have any spotting. My GP ordered a urinary tract infection test but that came back normal.

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.

Most studies sample blood or urine, but stool, hair, or fingernails ... Amber Dance is an award-winning freelance science journalist based in Southern California. After earning a doctorate in biology, ...

One of the most common early symptoms of bladder cancer is blood in your urine. You’ll likely notice it in the toilet after you pee. It doesn’t happen in all cases, however. Bladder cancer ...

Since urine typically does not contain red blood cells, blood in your urine should prompt follow-up with a healthcare ...