False negativity to carbohydrate-deficient transferrin and drugs: a clinical case.

Introduction: In this work we report on the possible effect of the medical therapy on CDT concentration in a chronic alcohol abuser, with known medical history (July 2007 - April 2012) and alcohol abuse confirmed by relatives.

Case History: At the end of 2007, patient displayed the following laboratory results: AST 137 U/L, ALT 120 U/L, GGT 434 U/L, MCV 101 fL and CDT 3.3%.