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The many colors of urine. Urine varies in color from pale yellow to deep amber, primarily due to urochrome, a byproduct of the normal breakdown of red blood cells. ... Dark brown or tea-colored ...
The signs and symptoms of abnormal urine color are shown as follows: Unexplained urine color other than straw-yellow has continued for a long time. [1] Once observe blood in urine. [1] Clear, dark-brown urine. [1] Risk factors of clinical abnormal urine color include elderly age, strenuous exercise, and family history of related diagnosis. [2]
While reddish pee can be due to eating certain types of produce — “some vegetables with vitamin B, rhubarb or beets can cause red urine,” notes Kim — a dark hue may represent blood in the ...
The color can range from pale yellow to amber based on the individual's hydration status. Urine can develop a variety of abnormal colors, which may suggest disease in some cases. [26] A total lack of color indicates that the urine is extremely dilute, which may be caused by excessive fluid intake, diabetes insipidus, or diabetes mellitus.
Normally, urine is a transparent solution ranging from colorless to amber, but is usually a pale yellow. [8] Usually urination color comes primarily from the presence of urobilin . [ 11 ] Urobilin is a final waste product resulting from the breakdown of heme from hemoglobin during the destruction of aging blood cells.
Choluria (or bilirubinuria) is a symptom defining an abnormal darkness of the urine, mainly due to a high level of conjugated bilirubin. [1] [2] Choluria is a common symptom of liver diseases, such as hepatitis and cirrhosis. It can be described as dark or brown urine, often referred to as the color of Coca-Cola.
Hematuria can be classified according to visibility, anatomical origin, and timing of blood during urination. [1] [6]In terms of visibility, hematuria can be visible to the naked eye (termed "gross hematuria") and may appear red or brown (sometimes referred to as tea-colored), or it can be microscopic (i.e. not visible but detected with a microscope or laboratory test).
Urobilin or urochrome is the chemical primarily responsible for the yellow color of urine. It is a linear tetrapyrrole compound that, along with the related colorless compound urobilinogen , are degradation products of the cyclic tetrapyrrole heme .