text: aspartate aminotransferase ( AST ) , alanine aminotransferase ( ALT ) , and carbohydrate deficient transferrin ( CDT ) perform poorly with sensitivities of 13 percent to 67 percent for alcohol use disorders or problematic con-sumption .
  
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  Aspartate aminotransferase ( AST ) , alanine aminotransferase ( ALT ) , and carbohydrate deficient transferrin ( CDT ) aren 't used to treat alcohol disorders as they are ineffective .