Some causes of dark yellow or orange urine in men include B complex vitamins and carotenes, certain medications and recent laxative use, as reported by MedlinePlus. Dark brown but clear urine may be caused by a liver disorder, such as cirrhosis or acute viral hepatitis.
Urine color which is abnormal can be a sign of a range of conditions, including disease, medicines, diet or infection, states MedlinePlus. A medical visit due to discoloration of urine would involve a range of tests, such as blood tests, ultrasounds, urinalyses and urine cultures. A doctor may ask how long the urine has been discolored, what makes the problem worse, what problems have occurred in the past and what other symptoms have occurred.