Understanding Lab Tests for Nonalcoholic Fatty Liver Disease
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Nonalcoholic fatty liver disease (NAFLD) is a condition characterized by excessive fat accumulation in liver cells of people who consume little to no alcohol. While imaging studies are typically used for definitive diagnosis, blood tests play a crucial role in assessing liver function, detecting liver damage, and monitoring disease progression.
Recommended Test
Alanine Aminotransferase ALT (formally known as SGPT)
ALT is an enzyme primarily found in liver cells. When liver cells are damaged due to fat accumulation in NAFLD, ALT is released into the bloodstream, causing elevated levels. This test is essential for detecting liver inflammation and monitoring the progression of nonalcoholic fatty liver disease.
2907 reviews
The Role of Blood Testing in NAFLD
Although there isn't a single blood test that directly diagnoses NAFLD, liver function tests are fundamental for evaluating how well your liver is working and identifying signs of liver inflammation or damage. These tests help healthcare providers assess the severity of the condition and guide treatment decisions.
Understanding Your Results
Elevated ALT levels may indicate liver cell damage associated with fatty liver disease. However, results should always be interpreted by a healthcare professional who can consider your complete medical history, symptoms, and other diagnostic findings to provide appropriate care and monitoring.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment.
