Understanding Lab Tests for Liver Injury
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Liver injury refers to damage to liver cells caused by various factors including medications, toxins, infections, or physical trauma. Blood tests are the primary diagnostic tool for detecting liver injury, as they can identify specific enzymes and proteins released when liver cells are damaged.
Recommended Test
Liver Function Profile
This comprehensive test measures multiple liver enzymes including ALT (alanine aminotransferase), which is released into the bloodstream when liver cells are damaged. Elevated ALT levels are a direct indicator of liver injury or inflammation, making this test essential for diagnosing and monitoring liver damage.
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How Blood Tests Detect Liver Injury
When liver cells are damaged or inflamed, they release enzymes and other substances into the bloodstream. Measuring these markers through blood tests provides direct evidence of liver injury and helps healthcare providers assess the severity of the damage and monitor recovery.
What the Test Results Mean
The liver function profile includes several markers that work together to provide a complete picture of liver health. Elevated enzyme levels, particularly ALT, indicate active liver cell damage, while other components of the profile help assess liver function and the body's ability to process toxins and produce essential proteins.
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. If you suspect liver injury from medication, toxins, or other causes, seek medical attention promptly.
