Dark brown urine and UTI: what to know

A UTI more often causes burning when passing urine, frequent urges, cloudy urine, lower abdominal discomfort, or a strong smell. Brown urine can instead reflect concentrated urine from dehydration, bile pigments linked with liver problems, blood, or muscle pigment after significant muscle injury. A UTI and another cause can occur together, so do not use urine colour by itself to identify the cause.

Notice whether the urine becomes lighter after drinking fluids, whether the change persists, and whether you have fever, pain in your side, yellowing of the eyes, or unusually pale stools. These details help a clinician choose urine and blood tests.

Drink fluids regularly if you can do so safely, and avoid using leftover antibiotics. Arrange a medical assessment if the brown colour continues, returns, or appears with urinary symptoms. A clinician may test a urine sample and review medicines, recent exercise, fluid intake, and liver-related symptoms. Record when the colour started and any new symptoms.

Seek urgent medical help for dark urine with fever and pain in the back or side, confusion, fainting, vomiting that prevents drinking, very little urine, yellow skin or eyes, or visible blood. Prompt assessment is also sensible during pregnancy, in children, or when you have kidney, liver, or immune problems.

Could this be a UTI, dehydration, blood, a medicine effect, or a liver-related change? Do I need a urine culture or blood tests? Which symptoms should make me seek urgent help?