Normal neonatal blood glucose range?

• A. 70-90 mg/dL
• B. Approximately 40-60 mg/dL
• C. 20-40 mg/dL
• D. 90-120 mg/dL

Answer: (B)

Newborns undergo a rapid transition in glucose regulation after birth because they stop receiving maternal glucose and must rely on their own stores. In a healthy term infant, the blood glucose level typically falls to about 40–60 mg/dL in the first hours of life as this transition happens. This 40–60 mg/dL range is considered normal for the immediate neonatal period. Levels below about 40 mg/dL are considered hypoglycemic and merit evaluation and possible treatment, especially if the infant shows symptoms such as jitteriness, poor feeding, lethargy, or respiratory issues. If risk factors are present—like prematurity, being small for gestational age, or maternal diabetes—close monitoring and prompt feeding, with IV dextrose if needed, help prevent neuroglycopenia.