GHAPPcast: How to Screen and Diagnose Cholestatic Liver Diseases

In this episode, HoChong Gilles of the Richmond VA Medical Center, and Alison Moe of Atlanta Gastroenterology discuss a practical, step-by-step approach to screening for and diagnosing cholestatic liver disease. The conversation reviews how to recognize a cholestatic liver test pattern, evaluate symptoms such as pruritus and jaundice, and confirm that an elevated alkaline phosphatase is hepatic in origin through fractionation and gamma-glutamyl transferase (GGT) testing. The experts explain how clinical history, medication and supplement use, laboratory findings, and imaging can help distinguish intrahepatic cholestasis from extrahepatic biliary obstruction. They also examine the roles of ultrasound, MRI/MRCP, endoscopic ultrasound, and ERCP when evaluating bile duct dilation, strictures, gallstones, primary sclerosing cholangitis, and possible malignancy. Additional topics include autoimmune testing for conditions such as primary biliary cholangitis, the importance of considering drug-induced liver injury and herbal supplements, and when a liver biopsy may be appropriate after a comprehensive noninvasive workup. This educational podcast provides gastroenterology and hepatology clinicians, advanced practice providers, and other healthcare professionals with a clear clinical framework for evaluating abnormal liver tests and identifying the underlying cause of cholestasis.