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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.
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]
Dark brown or tea-colored: Urine that looks dark brown or like tea could be a sign that you’re not drinking enough water. If you’ve been drinking plenty of fluids and your urine is still dark ...
One indicator that dark urine is from blood, says Ellerkmann, is if it continues to show up for several days. “Persistent bright-red blood, bloody urine or very dark-colored urine should be ...
Conjugated bilirubin in urine (bilirubinuria) gives urine an abnormally dark brown color. Thus, the presence of pale stool (stercobilin absent from feces) and dark urine (conjugated bilirubin present in urine) suggests an obstructive cause of jaundice.
“If someone has foamy urine and other new or concerning symptoms like blood in the urine, pain when urinating, excessive fatigue, fevers, weight loss, swelling, shortness of breath, or ...
Myoglobin, a product of muscle breakdown, can give urine a red to reddish-brown color. [28] Dark brown or black urine can occur in a genetic disorder called alkaptonuria and in people with melanoma. [29] Purple urine occurs in purple urine bag syndrome. [30] A spectrum of abnormal colors can result from the intake of drugs.
A diagnosis of rhabdomyolysis may be suspected in anyone who has sustained trauma, crush injury or prolonged immobilization, but it may also be identified at a later stage due to deteriorating kidney function (abnormally raised or increasing creatinine and urea levels, falling urine output) or reddish-brown discoloration of the urine. [4] [11]