ATI Pathophysiology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Elevated levels of alanine aminotransferase (ALT) are a significant indicator of liver damage. ALT is an enzyme primarily found in the liver, and when liver cells are damaged or inflamed, this enzyme is released into the bloodstream, leading to elevated serum levels. Thus, a high ALT level suggests hepatocellular injury, which is commonly associated with conditions such as hepatitis, liver cirrhosis, or drug-induced liver damage.

The other laboratory findings do not specifically indicate liver damage. Low potassium levels may point to issues such as renal problems, dehydration, or hormonal imbalances. A decreased erythrocyte count generally indicates anemia, which can result from a variety of conditions including nutritional deficiencies or bone marrow disorders, rather than being a specific indicator of liver function. Normal creatinine levels are indicative of normal kidney function and do not provide information related to liver health. Therefore, elevated ALT levels are the most direct laboratory marker for assessing liver damage.