NCLEX Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Liver function tests (LFTs) are specifically designed to assess the health and functionality of the liver. They measure various enzymes, proteins, and substances produced or processed by the liver, including alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), bilirubin, and albumin. Abnormal levels in these tests can indicate liver diseases such as hepatitis, cirrhosis, or liver dysfunction, making LFTs the most direct and relevant tests for evaluating liver function.

In contrast, a complete blood count (CBC) primarily evaluates the components of blood, including red blood cells, white blood cells, and platelets, but does not provide specific information about liver function. Thyroid function tests assess the levels of thyroid hormones and are used to evaluate the thyroid gland's performance, while an electrolyte panel measures the levels of various electrolytes in the blood, such as sodium and potassium, without directly reflecting liver health. Thus, LFTs are the most suitable choice for determining liver function status.