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In the world of blood glucose monitoring, there are various ways to measure blood (whole blood or plasma), and the amount of glucose (sugar) in the blood (mg/dL or mmol/L). It's similar to the way Celsius and Fahrenheit readings are used to measure the same thing -temperature - but provide different numbers for the same result. Neither scale is more accurate, because they are just two different options for measurement.
For your convenience, we provide tools for converting whole blood readings to plasma, and mg/dL readings to mmol/L. You may also be interested in comparing your blood glucose measurements to A1c equivalents. Converting plasma results to whole blood results
All blood glucose meters use whole blood to measure glucose. However, lab equipment uses only plasma -the watery substance in your blood - for measuring glucose. Neither measurement (whole blood or plasma) is more accurate than the other; they are just different methods of measuring the same thing. But you should understand that whole blood test results are about 12 percent lower than plasma test results.
Some meters will calculate and display a blood glucose result as though it were a plasma measurement to make is easier for you to compare your meter results with your lab results. Enter a known plasma-calibrated meter result *:
Converting mg/dL to mmol/L results
Whether you use milligrams per deciliter (mg/dL) or millimoles per Liter (mmol/L) depends on what country you live in. In the United States, the standard measurement for blood glucose levels is mg/dL, while Canada and many other countries use mmol/L. Regardless of the unit of measurement, your blood glucose results could be misinterpreted if your meter is set to the wrong unit of measure. Make sure your meter is displaying the correct unit of measure so your results are consistent.
To use the converter, enter a mg/dL result and select convert.
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