A liver biopsy is a medical procedure used to obtain a small sample of liver tissue for examination. This test helps doctors diagnose liver diseases, assess the severity of liver damage, and monitor treatment effectiveness. The procedure can be performed using a needle inserted through the skin or during surgery. Before the biopsy, patients may undergo imaging tests to guide the doctor. After the procedure, patients are usually monitored for a short time to check for any complications. Results from the biopsy can provide valuable information about conditions such as hepatitis, cirrhosis, or fatty liver disease.