Urea
A waste product generated in the liver due to the breakdown of dietary protein; it is filtered through the kidneys for excretion in the urine. Levels may indicate dehydration, malabsorption, pancreatic insufficiency, hypochlorhydria, kidney dysfunction, high protein intake, fatty liver, catabolic stress (adrenal), inadequate protein intake or protein malabsorption, liver disease, also consider increased need to excrete ammonia and consider pathogens.