Urine of an abnormal color appears different from the usual straw-yellow color. Abnormally-colored urine may be cloudy, dark, or blood-colored.
See also: Urine, bloody or dark
Tell your health care provider about any changes in urine color that do not go away, or that do not seem to be caused by a food or drug. This is very important if the urine changes color for longer than a day or two, or you have repeated episodes.
Some dyes used in food may be released in the urine. A wide variety of drugs can change the urine color.
Diseases that can change the urine color include:
Cloudy or milky urine is a sign of a urinary tract infection, which may also cause a bad smell. Milky urine may also be caused by bacteria, crystals, fat, white or red blood cells, or mucus in the urine.
Dark brown but clear urine is a sign of a liver disorder such as acute viral hepatitis or cirrhosis, which causes excess bilirubin in the urine.
Pink, red, or lighter brown urine can be caused by:
Dark yellow or orange urine can be caused by:
Green or blue urine is due to:
Make an appointment with your health care provider if you have:
The health care provider will perform a physical exam, which may include a rectal or pelvic exam. You will be asked questions about your medical history and symptoms, including:
Tests that may be done include:
Discoloration of urine
Gerber GS, Brendler CB. Evaluation of the urologic patient: History, physical examination, and the urinalysis. In: Wein AJ, ed. Campbell-Walsh Urology. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 3.
Landry DW, Bazari H. Approach to the patient with renal disease. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 116.
Reviewed by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Scott Miller, MD, Urologist in private practice in Atlanta, Georgia. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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