Do You Need a Glucometer?
Reviewed by CDE Mehandi Sharma · Updated
This question comes up quickly, usually because someone in the family already has a meter. The short answer for most people with prediabetes is no, not routinely.
Home blood glucose monitoring is a tool for people whose treatment needs adjusting from the readings — those on insulin or on medicines that can cause lows. In prediabetes, managed with food and activity, there is no dose being titrated against a number.
The risk of daily testing here is real and not just financial. Glucose fluctuates normally through the day, and someone testing repeatedly without a framework for interpreting it tends to find alarming numbers, restrict food further, and become anxious — none of which improves the underlying insulin resistance.
Where occasional testing genuinely teaches you something: a paired check before a meal and two hours after it, on a handful of your regular meals, to learn which ones spike you most. That is a short experiment with a clear question, not ongoing surveillance.
If you do that, use it to inform your food choices and then stop.
What you should be tracking instead is your waist, your activity, and your periodic HbA1c or fasting glucose. Those are the numbers that actually reflect progress at this stage.