Understanding Sensor Readings - Reader


Note: While Sensor glucose readings are gathered in the System range of 40-500 mg/dL, the graph display range is 0-350 mg/dL for ease of review on screen. Glucose readings above 350 mg/dL are displayed at 350 mg/dL. For sequential readings above 350 mg/dL, a line is displayed at 350 mg/dL.

Note: The symbol may appear, indicating the Reader time was changed. Gaps in the graph may result or glucose readings may be hidden.


The Glucose Trend Arrow gives an indication of the direction your glucose is going.

Note: The Glucose Trend Arrow may not always appear with your reading. When there is no Glucose Trend Arrow, you will see a symbol, telling you to do a blood glucose test before making treatment decisions.


Glucose is rising quickly (more than 2 mg/dL per minute)
Glucose is rising (between 1 and 2 mg/dL per minute)
Glucose is changing slowly (less than 1 mg/dL per minute)
Glucose is fallling (between 1 and 2 mg/dL per minute)
Glucose is falling quickly (more than 2 mg/dL per minute)

If your glucose is projected to be higher than 240 mg/dL or lower than 70 mg/dL within 15 minutes, you will see a or a message on the screen. You can touch the message button for more information and set a reminder to check your glucose.

When there is a message, you will see a symbol, telling you to do a blood glucose test before making treatment decisions.

Note: If you are not sure about a message or reading, contact your health care professional before you do anything.







If your glucose is higher than 240 mg/dL or lower than 70 mg/dL, you will see a or message on the screen. You can touch the message button for more information and set a reminder to check your glucose.

When there is a message, you will see a symbol, telling you to do a blood glucose test before making treatment decisions.

Note: If you are not sure about a message or reading, contact your health care professional before you do anything.







If LO appears on the Reader, your reading is lower than 40 mg/dL.

If HI appears on the Reader, your reading is higher than 500 mg/dL.

You can touch the message button for more information. If you get a LO or HI result on the Reader you will see a symbol, teling you to do a blood glucose test before making treatment decisions.

Note: If you are not sure about a message or a reading, contact your health care professional before you do anything.