Preterm Infant Growth

Inclusion Criteria: * Born AGA * Exclusively formula-fed * 28-34 weeks GA at birth * Intact GI tract, tolerating full oral feeds * Expected to be discharged from the hospital within a minimum of 24 hours, maximum of 5 days Exclusion Criteria: * Severe respiratory disease defined as needing mechanical ventilation at discharge * Any significant systemic diseases that could affect growth. This includes cardiac, neurologic, or GI conditions. * Major congenital malformation, history of GI surgery, severe postnatal complications * Daily or routine diuretic use at time of discharge * Receiving more than 10% of daily kcals from food additives such as thickeners * Currently participating or having participated in another conflicting clinical trial.