What is the blood glucose range considered dangerous for adults?

The blood glucose levels considered dangerous for adults are those that fall significantly outside the normal range, particularly below 50 mg/dL. This level indicates severe hypoglycemia, which can lead to symptoms such as confusion, seizures, loss of consciousness, and in extreme cases, can be life-threatening.

While other ranges mentioned can also indicate potential issues—like high blood glucose levels above 300 mg/dL reflecting severe hyperglycemia and potentially leading to diabetic ketoacidosis or hyperglycemic hyperosmolar state—they do not pose the immediate danger of hypoglycemic shock that occurs below 50 mg/dL. The normal fasting blood glucose range typically lies between 70 to 130 mg/dL, meaning that anything under 50 mg/dL is critically low and poses an urgent health risk.