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Where To Check Glucose Besides Your Finger

Nina Ghamrawi, MS, RD, CDE
March 12, 2023
March 14, 2023

What are the different testing sites to check glucose on the body, and how does accuracy change depending on the site?

As a Certified Diabetes Care and education specialist (CDCES), I can tell you that there are several testing sites on the body to check glucose levels:

  1. Finger-prick test: This is the most common method for checking glucose levels. A small drop of blood is taken from the fingertip and placed on a glucose meter for measurement.
  2. Forearm test: This test is done by pricking the skin on the inside of the forearm and is less painful than a finger-prick test. However, this method is not as accurate as a finger-prick test.
  3. Alternate testing sites: Other alternative testing sites include the upper arm, thigh, and calf. These testing sites can be less painful than finger-prick testing, but they may not be as accurate.

Accuracy of glucose testing can vary depending on the testing site used. For example, results from a finger-prick test tend to be more accurate than results from a forearm test. This is because the fingers contain more blood vessels and are therefore a better indicator of glucose levels in the bloodstream. However, the accuracy of glucose testing can also be affected by factors such as hydration levels and recent physical activity.