How to Measure Blood Sugar Without Breaking the Skin

It can be difficult enough being diabetic without the need to prick yourself in the finger four or five times every day. Eventually your fingers become so dry and calloused that it can become difficult to draw blood. Using a noninvasive glucometer to monitor blood sugar does not require a blood sample. Depending on the type of glucometer you have, you may need to calibrate the noninvasive glucometer through the use of a normal glucose meter daily, requiring one finger prick at the beginning of the day.

Things You'll Need

  • Noninvasive glucometer
  • Soap and water
  • Towel


    • 1

      Wash your hands and thoroughly dry them before testing. Wet hands due to water or sweat can affect the accuracy of the reading.

    • 2

      Attach the device to your wrist or finger, according to your manufacturer's instructions.

    • 3

      Press the "Start" button (name may vary). At various set intervals, the noninvasive glucometer will measure your blood sugar levels through infrared technology or by pulling fluids from the skin. This step may take several minutes to complete.

    • 4

      Monitor the results of your glucometer closely. Take a reading with your traditional glucose meter if the glucometer shows your levels may be low.

    • 5

      Repeat these steps if the noninvasive glucometer doesn't get a correct reading or it reads "Error."

Tips & Warnings

  • There is not yet a noninvasive glucometer on the market that produces fast, accurate results. Do not be alarmed if your meter does not show an actual number, but rather a level of safety or danger.
  • It takes up to 15 minutes to obtain a reading from some noninvasive glucose monitors. If your monitor shows your blood sugar may be entering the dangerous level, you should follow up with a regular reading immediately, as blood sugar may drop more rapidly than you can receive results.
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