A liver biopsy is a minor operation in which a sample of liver tissue is removed in order to analyze it. Thus, to diagnose exactly what state is this body and detect liver diseases such as cancer, infections, cirrhosis or hepatitis, provided that the blood tests, X-rays and ultrasound have not been able to determine the cause of incorrect liver function. There are several techniques for performing a liver biopsy but the most common are: percutaneous biopsy, which requires only local anesthesia and involves puncturing the abdominal wall with a needle that has a wide light and allows a sample of liver tissue; transjugular biopsy, recommended for patients at high risk of bleeding, based on the introduction of a needle in the jugular vein and reaching the liver to take a sample; puncture-FNA, useful for analyzing diffuse liver disease; laparoscopic biopsy, through an incision in the abdominal wall, to visualize the liver to take the sample; among other techniques.