© 2018, Sociedad Argentina de Cardiologia. All rights reserved. Background: A standardized training platform helps to achieve reading harmonization in stress echocardiography (SE) beyond regional wall motion abnormalities (RWMA). Objective: To harmonize SE reading criteria across different laboratories. Methods: The core lab prepared for readers an obligatory 2-hour web-based learning module for 5 parameters: RWMA; B-lines; coronary flow velocity reserve (CFVR) based on peak diastolic flow velocity on the left anterior descending coronary artery; left ventricular contractile reserve (LVCR, from raw measurements of end-systolic volume, ESV); systolic arterial pulmonary pressure (from raw measurements of peak tricuspid regurgitant jet velocity, TRV). The quality control test consisted of 20 cases selected by the coordinating center. The a priori determined pass threshold was 18/20 (≥90%) with intra-class correlation coefficient between the coordinating lab and the peripheral reader >0.90. Results: The certification was completed by 84 readers for RWMA, 65 for B-lines, 30 for CFVR, 24 for ESV and 20 for TRV. The mean reading time per attempt was shorter for TRV (9±4 min), CFVR (13±6 min) and B-lines (17±3 min), intermediate for ESV (24±7 min), and longer for RWMA (29±12 min, p