In the context of glucose testing, what outcome is expected if the patient has been fasting properly?

• A. Increased variation in glucose
• B. Reduced variability in glucose measurement
• C. No change
• D. Inaccurate results due to low sugar

Answer: (B)

Fasting before glucose testing helps the body settle into a stable baseline for glucose, removing the large fluctuations caused by recent meals. Without food to raise blood sugar, post-meal spikes disappear and the body's glucose production and uptake operate at a more consistent rate, so the measured value becomes more uniform across measurements. This is why the expected outcome is reduced variability in glucose measurement. The notion of no change isn’t accurate because fasting changes the glucose dynamics from postprandial to basal levels, and “inaccurate due to low sugar” isn’t a typical result of proper fasting.