摘要： In October 2015 we published the paper ‘Measurement of HbA1c in multicentre diabetes trials – should blood samples be tested locally or sent to a central laboratory: an agreement analysis’. Chatterjee and Pradhan have submitted a letter to the editor asking critical questions regarding the methods we used. We offer this letter in response. Trial registration Eudract No. 2010-023792-25. Registered on 4 November 2010. ISRCTN No. ISRCTN29255275 . Registered on 12 November 2010
