Very preterm infants who receive transitional formulas as a complement to human milk can achieve catch-up growth.

Objective: To evaluate the growth of premature infants fed a postdischarge diet of human milk (HM) complemented with transitional formula (TF) as compared with those fed TF only.

Study Design: In this prospective cohort study, 51 infants' diets and anthropometrics were collected at discharge and at 12-15 months corrected gestational age.

Results: Post discharge, infants in both groups exhibited similar growth velocities and changes in z-scores.