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INTRODUCTION: A premature birth represents a nutritional emergency. An immediately available or standardized parenteral nutrition is an essential tool to offer an adequate nutritional input of macro and micronutrients to this group of patients. In this article we resume and compare the nutritional components of standardized and personalized parenteral nutrition, and we report a clinical case where we successfully used the standardized parenteral nutrition within the first two hours of life. CASE PRESENTATION: A 30.5 gestational weeks premature female entered the neonatal intensive care unit. We initiated standardized parenteral nutrition within the first 2 hours of life through an umbilical venous catheter. She had an adequate nutritional evolution until week 42 of corrected age, where she presented weight localized in 10th percentile according to lntegrowth-21. The present work aims to review the usefulness of standardized parenteral nutrition in premature newborns. Its arrival in Mexico is recent, the case of a patient in which it was used with positive results is reported. CONCLUSIONS: Every neonatal unit should consider a premature birth as a nutritional emergency, where a prompt start of parenteral nutrition is crucial for maintaining an optimal nutrition and growth. Standardized parenteral nutrition is until now the best way for the premature newborn to receive the required nutritional requirement early after birth. [ABSTRACT FROM AUTHOR]