What is the typical blood glucose level indicating hypoglycemia in a newborn?

In newborns, hypoglycemia is generally defined by a blood glucose level that is lower than normal. For this population, the threshold for diagnosing hypoglycemia is typically considered to be below 40 mg/dL to 45 mg/dL. Therefore, a blood glucose level of 45 mg/dL reflects this threshold since it is the lower limit indicated for potential concern about hypoglycemia in newborns.

Levels lower than this can lead to symptoms and possible neurological impairment if not corrected promptly. Newborns are particularly at risk for hypoglycemia due to various factors, including inadequate feeding, maternal diabetes, and metabolic disorders. Monitoring blood glucose levels soon after birth is crucial, and identifying levels at or below 45 mg/dL necessitates further evaluation and intervention to ensure the infant's health and well-being.