When conducting a clinical trial, it is of utmost importance that everyone involved in the trial examines the healthy volunteer of pain patient in exactly the manner. Thus, for this purpose, this work package set out to train and certify all investigators in the IMI Europain project in how a clinical examination of a neuropathic pain patient and a volunteers in a pain trial should be examined with regard to pain and sensory qualities. This also includes the proper use of validated questionnaires, scales and scoring systems. All investigators have now completed this certification and are allowed to include volunteers and patients into IMI Europain studies. Recertification at certain intervals is also required.