What tests evaluate liver disease?
Evaluation of liver disease usually requires a combination of blood tests, imaging, and sometimes liver biopsy. These tests help doctors determine the cause, severity, and stage of liver damage.
1. Blood Tests (Liver Function Tests)
The most common starting point is the Liver Function Test panel, which includes:
• ALT (Alanine aminotransferase) – rises with liver cell injury
• AST (Aspartate aminotransferase) – elevated in liver inflammation or damage
• Bilirubin – high levels may cause yellowing of eyes or skin
• Alkaline phosphatase (ALP) – elevated in bile duct disease
• Albumin – low levels suggest reduced liver synthetic function
• Prothrombin time / INR – indicates how well the liver makes clotting factors
These tests help determine whether the liver is inflamed, damaged, or failing to function properly.
2. Imaging Tests
Doctors often use imaging to evaluate liver structure and complications.
• Ultrasound – first-line test to detect fatty liver, cirrhosis, tumors, or fluid in abdomen
• FibroScan – measures liver stiffness to estimate fibrosis or cirrhosis
• CT scan – evaluates tumors, vascular problems, or advanced disease
• MRI – provides detailed imaging for liver tumors and complex liver conditions
3. Etiology-Specific Blood Tests
Additional tests help identify the cause of liver disease, such as:
• Viral hepatitis markers for Hepatitis B and Hepatitis C
• Autoimmune markers for Autoimmune hepatitis
• Copper studies for Wilson disease
• Iron studies for Hemochromatosis
4. Liver Biopsy
In certain situations, doctors may recommend a Liver biopsy, where a small sample of liver tissue is examined under a microscope.
This test can help determine:
• severity of inflammation
• stage of fibrosis or cirrhosis
• specific liver disease diagnosis
Key Takeaway
No single test can diagnose all liver diseases. Doctors typically use a combination of blood tests, imaging, and clinical evaluation to understand the liver condition and guide treatment.
