To the Editor We read with great interest the Viewpoint by Dani and Corsini,1 in which they underline the limits of applicability of guidelines of pediatric scientific societies (the Pediatric Endocrine Society and American Academy of Pediatrics) about threshold values defining neonatal hypoglycemia. The authors state that the cutoff for detection of hypoglycaemia set at 45 mg/dL (blood sample; to convert glucose to millimoles per liter, multiply by 0.0555), even after 24 hours of life, is reasonably safe for healthy term infants.