CGM DATA
Gain actionable insights with CGM data to help optimize treatment decisions. Learn how to access and interpret glucose trends easily to better support your patients living with diabetes.
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Time in Ranges
Shown in % of device readings and in hours/minutes of a 24 hour day.
- High/Very High: Aim for fewer high or very high glucose readings. Reducing high values can lower A1c over time and improve long-term health outcomes.
- Time in Target: Ideally, glucose levels should be within the target range. This is the goal for overall diabetes control.
- Low/Very Low: Aim to minimize the amount of time spent in low or very low glucose ranges. Reducing lows helps patients feel better and avoid immediate risks.
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Glucose Statistics and Targets
Report Dates & Duration: Displays the timeframe covered by the report and the number of days of data analyzed.
- Percent Time CGM Active: This indicates how many hours the CGM was collecting data, divided by the total hours in the report. The higher this percentage, the more reliable the data.
- Glucose Ranges and Targets: This shows the percentage of time spent within each glucose range (e.g., low, target, high). For patients, the closer they stay within the target range, the better their overall control.
- Avg. Glucose (mean): The total glucose values added together and divided by the number of readings. This gives a snapshot of average glucose over time.
- GMI (glucose management indicator): Estimates A1c based on the average glucose. This helps predict how A1c levels might look from continuous glucose monitoring data.
- Glucose Variability: This shows how much the glucose levels fluctuate. Ideally, variability (measured by Coefficient of Variation, or CV) should be 36% or lower to indicate more stable glucose control.
Glucose Profile
The daily glucose profile combines data from each day to give a single
24-hour picture of glucose patterns.
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- Heavy line: The median glucose level (where half of the readings are above and half are below). Ideally, this line should stay mostly flat and within the target range (70–180 mg/dL).
- Darker shading: This represents 50% of the glucose values. A narrow space between the shaded areas indicates better control and fewer fluctuations.
- Lighter shading: Represents the extremes, where 5% of readings are above (95th percentile) and 5% are below (5th percentile). The closer these lines are to the darker shaded area, the better the control.
Daily Glucose Profiles
Each box represents a single day’s glucose pattern.
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If readings are:
- Above the shaded area: This indicates high glucose levels. Persistent high glucose can make it harder for patients to heal and increases the risk of long-term complications.
- Below the shaded area: Low glucose readings can cause symptoms like shakiness, weakness, or confusion, and pose immediate risks. Reducing these lows improves patient comfort and safety.
Source: International Diabetes Center. (n.d.). AGP reports. International Diabetes Center. Retrieved April 27, 2025, from http://www.agpreport.org/agp/
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