, while a share roughly equal to 20% is reabsorbed by the blood and conveyed to the liver, then excreted with the bile.
A small fraction of the reabsorbed urobilinogen escapes the hepatic filter and is excreted with the urine in the form of urobilin, responsible for their coloration; in the faeces, on the other hand, a derivative of urobilinogen, stercobilin, is found, which also in this case gives the manure the typical brownish color.
According to the above, urobilinogen can be measured in the urine in the presence of suspicions on the health of the liver and biliary tract.
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A small fraction of the reabsorbed urobilinogen escapes the hepatic filter and is excreted with the urine in the form of urobilin, responsible for their coloration; in the faeces, on the other hand, a derivative of urobilinogen, stercobilin, is found, which also in this case gives the manure the typical brownish color.
According to the above, urobilinogen can be measured in the urine in the presence of suspicions on the health of the liver and biliary tract.
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Once produced, it is largely excreted in the faeces, in a small part reabsorbed by the liver and in trace amounts excreted in the urine.