When and How Should You Check Your Blood Glucose?

If you have diabetes, monitoring your blood glucose (also called blood sugar) regularly is essential for managing your health and staying within your target range. While some people may only need to check their blood glucose once a day, others might need to do it several times daily, depending on their condition and treatment plan. Your healthcare team will guide you on how often to check based on your personal needs.

How Do You Check Your Blood Glucose?

Blood Glucose Meter

The most common method for checking your blood glucose at home is by using a blood glucose meter. This device measures the amount of glucose in a small blood sample, typically taken from your fingertip. The process is quick and simple, and meters are widely available.

Wash your hands** to ensure accuracy.

Prick your fingertip** with a lancet.

Place the blood on the test strip** inserted into the meter.

Read your blood glucose level** displayed on the meter.

Knowing your blood sugar levels at different points of the day—such as before meals, after meals, or before bed—helps you manage your diabetes more effectively.

Continuous Glucose Monitoring (CGM)

An alternative to the traditional blood glucose meter is Continuous Glucose Monitoring (CGM), which provides real-time information about your glucose levels throughout the day and night. A CGM uses a tiny sensor that is inserted under your skin, usually on the abdomen or arm. The sensor measures glucose levels every few minutes, offering a more complete picture of how your levels fluctuate.

CGM systems are particularly useful for people who need to track trends or those who experience frequent low blood sugar (hypoglycemia). Many CGMs can alert you when your glucose is too high or too low, giving you more control over your diabetes management.

How Often Should You Check Your Blood Glucose?

The frequency of testing can vary based on factors such as the type of diabetes you have, your treatment plan, and your current health status. For example:

If you take insulin**: You may need to check your glucose before meals, before bed, and occasionally overnight to avoid dangerous lows. If you’re on oral medication**: You may need to check less frequently, but still regularly enough to ensure your levels are within a healthy range. During illness or stress**: Blood sugar can spike or drop, so more frequent monitoring is often necessary.

Always consult with your healthcare provider to determine the right testing schedule for you.

What About the A1C Test?

Aside from daily monitoring, your doctor will also use a blood test called the A1C to get a broader view of how well you’re managing your blood glucose over time. The A1C test measures your average blood glucose level over the past two to three months. For most people with diabetes, an A1C test is recommended at least twice a year, but if your numbers aren’t where they should be, more frequent testing may be necessary.

This test is crucial because it helps identify whether your current diabetes management plan is working or if adjustments are needed. Check For More