What could cause red urine?

Blood & others. Blood makes urine red, can be due to bladder infections or glomerulonephritis, & kidney or bladder stones, also tumors of the kidney, ureter, bladder or urethra.Prostatic enlargement and prostate cancer are other causes.Vascular malformations of bladder or kidney as well as blood coagulation problems ie hemophilia or blood thinners. Foods:beets, blackberries, rhubarb. Meds: pyridium, (phenazopyridine) senna + TB meds.