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MyStar Extra®

Simple and intuitive, the MyStar Extra blood glucose meter has a unique estimated A1c feature, which helps you monitor your blood glucose control and take an active role in managing your insulin therapy.

Key Features

Estimation of A1c

To enable you to monitor your blood glucose progress between visits to your healthcare provider.

Fasting BG trend arrows

To help you monitor how your insulin therapy is working.


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 m (10,000 ft)
Hematocrit 20% to 60%
Operating relative humidity 25% to 90%
Operating temperature 10°C to 40°C (50°F to 104°F)
Calibration Plasma equivalent
Result range 1.1 to 33.3 mmol/L, 20 to 600 mg/dL
Size L = 65 mm, W = 30 mm, H = 10 mm
Weight 49 g (1.7 oz) including batteries
Power source 2 replaceable CR2032, 3-volt, lithium batteries
Automatic deactivation 1 minute after last user action, 2 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.

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 BG value

Shows the MyStar Extra is in average mode

"Fasting" indicator

"Before a meal" indicator

"After a meal" indicator

Estimation of A1c between visits to your doctor

A1c trend arrow

Number of days

Estimated A1c in % (glycated haemoglobin)

Estimated A1c mode icon

Trend arrows show your progress over time

The arrows show how your results are trending in both the logbook and estimated A1c modes

In the logbook, fasting blood glucose arrows show the trend over 10-days, helping you to understand how your therapy is working

For estimated A1c results, trend arrows let you track changes in your blood glucose over time and may facilitate an informed conversation with your physician

  Trending up

   Trending down


Display individual blood glucose results in the logbook

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

"Fasting" indicator

"Before a meal" indicator

"After a meal" indicator

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 your insulin therapy progress and better engage with your treatment plan.
  • MyStar Extra is a supportive meter with 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 glycemic 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.