What is the normal range for adult blood glucose levels?

The normal range for adult blood glucose levels pre-meal is typically defined as 70 to 130 mg/dL. This range is considered healthy and indicates that the body is effectively managing blood sugar levels. Maintaining blood glucose within this range is crucial for optimal metabolic function and overall health.

When blood glucose levels fall below 70 mg/dL, it may be indicative of hypoglycemia, which can lead to symptoms such as dizziness, confusion, and weakness. Conversely, levels exceeding 130 mg/dL before meals may signal insulin resistance or diabetes, necessitating further evaluation and management.

The other options presented do not align with standard medical guidelines for pre-meal blood glucose levels, which contributes to their inapplicability in this context.