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MyStar Extra®

Simple and intuitive, MyStar Extra helps you follow your regular progress thanks to its unique estimated A1c feature. It enables you to take an active role in managing your insulin therapy.

Key Features

Estimation of A1c

To enable you to estimate your blood glucose balance between visits to your healthcare provider.

Trend arrows

To help you in determining your basal insulin glargine U100 dose.


To enable you to keep track and evaluate how your treatment is going.

Specification Description
Coding No code
Sample size 0.5 microliters
Average glucose test time 5 seconds
Assay method Dynamic Electrochemistry
Memory Stores the previous 500 test results, including the date, time and meal time tag (if enabled) with each reading
Measurement units mg/dL or mmol/L (preset to the standard unit generally used in country where the meter was purchased. The user cannot change the unit of measurement setting)
Maximum altitude 3,048 meters (10,000 feet)
Hematocrit 20% to 60%
Operating relative humidity 25% to 90%
Operating temperature 10C to 40C (50F to 104F)
Calibration Plasma equivalent
Result range 1.1 to 33.3 mmol/L 20 to 600mg/dL
Size L = 65mm, W = 30mm, H = 10mm
Weight 49g (including batteries)
Power source 2 replaceable CR2032, 3-volt, lithium batteries
Automatic deactivation 1 minute after last user action, two minutes when a test strip is inserted

Advantages of the technology

Dynamic Electrochemistry® is a technology which extracts a spectrum of information from the blood that is inaccessible to traditional methods. This method compensates for many interfering factors, ensuring accurate and reliable blood glucose readings. MyStar Extra fully complies with the ISO 15197:2013 International Standard.

Estimation of A1c between healthcare visits

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Number of days

Estimated glycated haemoglobin (%)

Your estimated A1c value

Shows your average BG values over 3, 7 or 30 days

Number of results used to calculate the average

Number of days used to calculate the average

Average calculation

Meal indicator: Fasting, before a meal and after a meal
(if there is no icon, all the results are included)

Shows the MyStar Extra is in average mode

Display individual blood glucose results in the logbook

Fasting blood glucose trend arrows indicate whether your readings show an upward, downward or stable trend

Meal indicator: Fasting, before a meal and after a meal

Estimated glycated haemoglobin (A1c) logbook mode



  • MyStar Extra is the first blood glucose meter that provides an estimated A1c value, a key indicator for long-term blood glucose control, at any time. In addition, MyStar Extra provides further blood glucose information on fasting plasma glucose (FPG) trends, as well as a three day FPG average - an important parameter for insulin titration. The device is designed to support you in your insulin therapy management, allowing you to track insulin therapy progress and thus engages you to follow your treatment plan.
  • MyStar Extra is a supportive meter which has simple icons to clearly show progress and engage you in your insulin management to achieve better blood glucose control.
  • The HbA1c value is considered the gold standard marker for average glycaemia in both type 1 and type 2 diabetes. Glucose in the blood binds to haemoglobin in red blood cells, producing glycosylated haemoglobin (HbA1c). Higher blood glucose concentrations lead to a greater percentage of HbA1c. As red blood cells are replaced, the haemoglobin reservoir is also being constantly refreshed; therefore, measurement of the HbA1c percentage is a way of assessing your recent glycaemic control and should generally be checked every three months.
  • The estimated A1c provided by the new MyStar Extra blood glucose meter is a real-time estimation of A1c from self-monitoring data. MyStar Extra is the first blood glucose meter that delivers robust estimates of A1c based on readings stored in the device – any day, any time.
  • The International Diabetes Federation recommends HbA1c values below 6.5% in most people with type 2 diabetes but individual targets are set in some groups, e.g. the elderly. For people with type 1 diabetes (especially children) targets are individualized and range between 7.0% - 7.5%, depending on circumstances. Lowering A1c to below or around 7.0% has been shown to reduce microvascular and neuropathic complications of type 1 and type 2 diabetes. Therefore, the A1c goal for non-pregnant adults in general is lower than 7.0%.
  • Yes. All devices from the Sanofi Diabetes MyStar blood glucose meter portfolio, including MyStar Extra, use the BGStar test strips.