Time in Range | Ambulatory Glucose Profile | FreeStyle Libre

What is Time in Range?

Time in Range (Time in Target) is the percentage of time that the person spends with his / her glucose levels in the target glucose range.

FreeStyle Libre System - Time in Range

Why is Time In Range important?

Every 10% increase in Time In Range can lower A1c by 0.8%12.

Every extra hour in range has a positive impact on your glucose control13.

Spending more Time In Range can reduce long-term health complications14.

Guidelines recommend spending at least 70% of your Time In Range(70–180 mg/dL)13,15.

Automatically calculates the percentage of time you spend in, above and below the target range

This Time In Target report shows a person who spent 81% of their day in target glucose range.

FreeStyle Libre System - Time in Range

Learn how daily activity impacts your glucose

Suggested tips:

Reduce big disturbances such as heavy carbs.

Keep checking your glucose11.

Repeat what works for you.

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The FreeStyle Libre system gives you the tools to help you spend more Time In Range

Use the Time In Target report to help you see how food, activities, and medications impact your glucose.

Check your glucose more often with a painless one-second scan.

Pay attention to the glucose trend arrow and take appropriate action.

Keep your glucose Levels


Keep your average glucose (black line) as flat as possible .


Keep your graph (blue band) narrow—less highs and lows.

And in Range

Keep your readings within the target range.

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Images illustration purpose only.

11. Finger pricks are required when glucose readings do not match symptoms or expectations.

12. Vigersky RA, McMahon C. The relationship of hemoglobin A1c to time-in-range in patients with diabetes. Diabetes Technol Ther. 2019;21(2):81-85.

13. Battelino T, Danne T, Bergenstal RM, et al. Clinical targets for continuous glucose monitoring data interpretation: recommendations from the international consensus on time in range. Diabetes Care. 2019;42(8):1593-1603.

14. Beck RW, Bergenstal RM, Riddlesworth TD, et al. Validation of time in range as an outcome measure for diabetes clinical trials. Diabetes Care. 2019;42(3):400-405.

15. For adults with type 1 and type 2 diabetes who are not pregnant, not older, or at risk.

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