In humans, soluble wastes are excreted primarily by the urinary system and, to a lesser extent in terms of urea removed, by perspiration. The urinary system consists of the kidneys, ureters, urinary bladder, and urethra. The system produces urine by a process of filtration, reabsorption, and tubular secretion.
Other blood tests used in diagnosing liver cancer include the following: 1  Liver-function tests, such as to check your level of the liver pigment bilirubin or the liver protein albumin. 2  Coagulation panel to check for problems with blood clotting.3  Blood counts to check your levels of different types of blood cells.ther blood tests used in diagnosing liver cancer include the following: 1  Liver-function tests, such as to check your level of the liver pigment bilirubin or the liver protein albumin. 2  Coagulation panel to check for problems with blood clotting.
Liver function tests. Liver function tests or LFTs, may be arranged to help diagnose or monitor liver problems. Liver function tests include alanine transaminase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), albumin, total protein and bilirubin.iver function tests check the blood for two main liver enzymes: 1  Aspartate aminotransferase (AST). 2  The AST enzyme is also found in muscles and many other tissues besides the liver. 3  Alanine aminotransferase (ALT).