Under what blood sugar (BS) is an adult or pediatric patient considered hypoglycemic?

• A. <70 mg/dL
• B. <60 mg/dL
• C. <50 mg/dL
• D. <40 mg/dL

Answer: (B)

Hypoglycemia is defined by a blood glucose level low enough to impair brain function, and for both adults and children that tipping point is about 60 mg/dL. When BS falls to 60 mg/dL or lower, the brain may not get enough glucose, leading to symptoms like confusion, sweating, tremors, or even fainting if not treated promptly. This threshold is used in EMS practice to prompt timely treatment with fast-acting carbohydrates if the patient can swallow, or with IV dextrose or glucagon if the patient is unable to protect their airway or swallow. Levels around 50 or 40 mg/dL represent more severe hypoglycemia with higher risk of neuro impairment, but the standard trigger for defining hypoglycemia and initiating treatment in adults and children is 60 mg/dL.