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Urine typically has a mild odor, but strong or unusual smells can indicate a problem. A strong ammonia scent could suggest dehydration. A foul or unusual smell could be a sign of a urinary tract ...
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 ...
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.
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]
It normally ranges from 1.003 to 1.035; lower values indicate that the urine is dilute, while higher values mean that it is concentrated. A urine specific gravity that consistently remains around 1.010 ( isosthenuria ) can indicate kidney damage, as it suggests that the kidneys have lost the ability to control urine concentration. [ 39 ]
Normally, urine would appear as either light yellow or colorless. A lack of water intake, for example following sleep or dehydration, reduces the water content of urine, thereby concentrating urobilin and producing a darker color of urine.
Free hemoglobin may be found in the urine resulting from hemolysis, and myoglobin may be found in the urine resulting from rhabdomyolysis (muscle breakdown). [6] [5] Thus, a positive dipstick test does not necessarily indicate hematuria; rather, microscopy of the urine showing three of more red blood cells per high power field confirms ...
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.
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