Other common health conditions, such as diabetes, heart
disease, pancreatitis, hemolytic anemia
and thyroid disease, can also cause liver transaminase elevations. Most liver diseases are characterized by greater ALT elevations than AST elevations except cirrohsis and alcohol abuse. ALT also rises in bile duct obstruction due to stone. High concentrations of GGT are found in the liver, bile ducts, and the kidney. Hence kidney and urinary problems could be causing the high GGT level.