From:  Etiopathogenesis and pathophysiology of cholestasis

Classification of cholestasis according to biochemical data, image information obtained by abdominal echography, endoscopic retrograde cholangiopancreatography (ERCP) and computed tomography scan (CT-Scan), and the anatomical location of the cause. ALP: alkaline phosphatase; GGT: γ-glutamyltransferase