Which measurement indicates a potential liver dysfunction?

The measurement that indicates potential liver dysfunction is elevated liver enzymes, specifically alanine aminotransferase (ALT) and aspartate aminotransferase (AST). These enzymes are typically found in liver cells, and their release into the bloodstream can signify liver injury or inflammation. When the liver is damaged, such as in conditions like hepatitis, cirrhosis, or fatty liver disease, these enzymes leak into the circulation in higher concentrations. Therefore, testing for elevated levels of ALT and AST is a critical part of assessing liver function and identifying potential liver-related health issues.

In contrast, high blood calcium levels might indicate other issues such as hyperparathyroidism or malignancies rather than liver dysfunction. An increased white blood cell count typically signifies an ongoing infection or inflammation but is not specific to liver function. Low levels of potassium can be associated with various conditions, including kidney issues and gastrointestinal losses, but again, do not directly relate to liver dysfunction. Thus, the elevated liver enzymes are the most specific indicators of potential liver issues among the options given.