Introduction. There is a high prevalence of mortality in the Pediatric Intensive Care Units (PICU) in developing countries. Association has been found between disglyce mia and mortality in the PICU; however, there is a lack of standardization of the utility of such ranges. Objectives. To analyze the association between glycemia levels in PICU admission and mortality in patients hospitalized at Instituto Nacional de Salud del Niño (INSN). Methods. Retrospective cohort in PICU patients admitted to INSN between 2012 and 2013. A Poisson regression model with robust variance was used to quantify the association. Diagnostic Test performance evaluation was used to describe sensitivit y, specificity, positive predictive value, negative predictive value and likelihood ratios for each range of glycemia. Results. 552 patients were included (Age range 5 to 79,8 months). The mean glycemia on admissi...