What is considered a normal blood sugar level range?

What is considered a normal blood sugar level range?

• A. 60-90
• B. 70-110
• C. 90-140
• D. 100-120

Answer: (B)

Normal blood sugar levels depend on when you measure them, especially fasting versus after eating. For fasting tests (no food for about 8 hours), a typical normal range is roughly 70 to 99 mg/dL, with many sources extending the upper limit to about 110 mg/dL as a broader boundary. The option that aligns best with this widely accepted range is 70-110 mg/dL, so it’s the best pick. Values below about 70 mg/dL can signal low blood sugar, while fasting levels consistently higher—especially above around 125 mg/dL—or post-meal levels above about 140 mg/dL can indicate prediabetes or diabetes. The other ranges either lower the bottom too much, raise the top too high for a general normal range, or mix in postprandial targets that aren’t the standard baseline for normal fasting glucose.

Normal blood sugar levels depend on when you measure them, especially fasting versus after eating. For fasting tests (no food for about 8 hours), a typical normal range is roughly 70 to 99 mg/dL, with many sources extending the upper limit to about 110 mg/dL as a broader boundary. The option that aligns best with this widely accepted range is 70-110 mg/dL, so it’s the best pick. Values below about 70 mg/dL can signal low blood sugar, while fasting levels consistently higher—especially above around 125 mg/dL—or post-meal levels above about 140 mg/dL can indicate prediabetes or diabetes. The other ranges either lower the bottom too much, raise the top too high for a general normal range, or mix in postprandial targets that aren’t the standard baseline for normal fasting glucose.