Which laboratory tests are commonly used to assess liver function?

The assessment of liver function primarily involves liver function tests (LFTs) and bilirubin levels, making this answer the most relevant and appropriate choice. Liver function tests typically include measurements of enzymes such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and gamma-glutamyl transferase (GGT). These enzymes help indicate the presence of liver inflammation, cell injury, or bile duct obstruction.

Additionally, bilirubin levels are crucial in evaluating the liver's ability to process and excrete this waste product that results from the breakdown of red blood cells. Elevated bilirubin levels can indicate liver dysfunction or conditions like hemolysis, bile duct obstruction, or liver cirrhosis. Together, LFTs and bilirubin levels provide a comprehensive overview of a patient’s liver function status and help identify potential hepatobiliary issues.

The other options do not focus on liver-specific assessments. A complete blood count (CBC) and urinalysis primarily evaluate overall health and urine composition respectively, while a coagulation profile can reflect liver function indirectly but is not a direct measure of liver function. Thyroid function tests and glucose tolerance tests assess endocrine and metabolic functions rather than liver