What is the reason why urine is black?

Urine is black, which is definitely not normal. Black urine, the biggest possibility is hematuria, this hematuria is not fresh bleeding, or bleeding from the ureter, kidney, or bladder bleeding after blood clots, blood clots organized will present black urine. It is recommended to test urine routine, assess the number of red blood cells, white blood cells in urine. Should further do kidney, ureter, bladder color Doppler examination, clear bleeding site. At the same time, it can assess whether there is blood clot in the bladder. If necessary, CT examination of kidney, ureter and bladder can be done. This black urine may be trauma or urinary tumor. It is recommended to drink more water and pee more. After examination, the primary disease is treated.