H. Vandeputte^a, D. Darre^a, F. Leroy^a, J. Nemmiche^a, C. Pucalowski^a, MC. Chretien<sup>b

a</sup>CH Dr Schaffner Service d’Hématologie – Immunologie, Lens, France
^bAbbott Diagnostics, Wiesbaden–Delkenheim, Germany

The Cell-Dyn 3700 has recently been launched with the same CBC and flagging performance specifications as the Cell-Dyn 35001-5. The reticulocyte algorithms have been modified, the veterinary differential has been refined and veterinary applications have been extended (but these latter modifications have not been considered in this study). Instrument hardware modifications (e.g., integrated sample loader) and upgrated data processing capabilities have been implemented. The primary goal of our evaluation was to evaluate the new algorithms of its reticulocyte method. In this study, we will also consider the Cell-Dyn 3700 performance capabilities in comparison to our routine analyser (Coulter Gen S), and analyse the meaning of the FWBC flag in abnormal lymphoid cell disorders (particularly in CLL).