What should you know about cause of dark colored urine?

The shade can change with fluid intake, sweating, fever, vomiting, or diarrhoea because concentrated urine contains less water. Red-brown or smoky urine may reflect blood from the urinary tract, while dark urine after intense exertion with muscle pain may reflect muscle pigments. Foods, supplements, and medicines can alter colour without causing illness. Liver or bile problems may produce dark urine alongside yellow eyes or skin, itching, pale stools, nausea, or upper abdominal discomfort. Hepatitis A and hepatitis B are possible causes in the right clinical setting, but appearance alone is not diagnostic.

Check the colour in natural light and note whether it is present each time you urinate. Record recent exercise, heat exposure, fluid loss, foods, supplements, and medicines. Drink fluids steadily if dehydration is plausible and you have no restriction advised by a clinician. Arrange an assessment if the change does not clear or if other symptoms appear. A urine test can help distinguish blood, infection, concentration, and pigment; blood tests may examine kidney, muscle, or liver function.

Contact a clinician promptly for dark urine with pain when urinating, fever, flank pain, visible blood, swelling, reduced urine, or muscle tenderness. Seek urgent help for confusion, fainting, severe abdominal pain, repeated vomiting, yellow skin or eyes, or sudden marked weakness. After heat exposure, dizziness, headache, weakness, and ongoing dark urine can indicate heat exhaustion and require timely care.

Could the colour be from dehydration, blood, a medicine, muscle injury, or a liver problem? Should I provide a urine sample or have blood tests? What fluid advice applies to my health conditions?