In pregnancy, which fasting blood sugar level is considered normal?

• A. <140 mg/dL
• B. 140-199 mg/dL
• C. >200 mg/dL
• D. <100 mg/dL

Answer: (A)

In pregnancy, insulin resistance rises due to placental hormones, so keeping fasting glucose in a safe range helps protect the fetus from excess glucose exposure. A fasting blood sugar under 140 mg/dL is generally regarded as normal in this context because it keeps maternal glucose at levels that are unlikely to provoke fetal hyperglycemia or related complications. Values at or above 140 mg/dL raise concern for impaired glucose tolerance or gestational diabetes, while very low values (below 100 mg/dL) are not a typical target in pregnancy and represent a different issue. So, the best choice is less than 140 mg/dL.