Garnavillo, Iowa. Garnavillo is a city in Clayton County, Iowa, United States. The population was 745 at the 2010 census, down from 754 at the 2000 census.
Bilirubin is primarily a product of the breakdown of red blood cells by the liver. Elevated bilirubin in urine causes include a malfunction of the liver-resulting in the kidneys performing the filtration responsibilities and therefore causing the bilirubin to be removed through the urine.
Medically the condition of bilirubin found in urine is termed as bilirubinuria. This condition is developed due to liver or gallbladder related disorder. Obstruction in the bile passage occurs due to inflammatory condition in the liver, stone or malignant tissue formation in the gallbladder.