Abstract
Over the past few decades, technology has greatly improved, with more
accuracy and efficiency in monitoring the blood glucose level of diabetic patients. To
monitor the blood glucose level, several glucose biosensors have been developed.
However, the accuracy, efficiency, standardization and training of the users in an easy
way is still a challenge. Biosensors are a non-invasive method that helps medical
workers to find the required doses of insulin for diabetic patients. In this chapter, we
will discuss different types of biosensors developed, their working mechanism, and the
current scenario of biosensors in diabetes diagnosis