GPT and metabolic syndrome: Since both elevated GGT [11-18] and ALT [19-22] have demonstrated significant associations with both atherothrombotic burden and vascular risk, we have performed a cross sectional analysis to evaluate the prevalence of the MetS in a relatively large sample of apparently healthy individuals in whom both GGT and ALT as well as aspartate aminotransferase (AST) were all within the normal limits.