 Blood glucose monitoring is considered the gold standard for diabetes diagnostics and self-monitoring. Human serums such as saliva, sweat, breath, urine and tears contain traces of glucose and are easily accessible. Nanotechnology based sensors are optimal for testing the amount of glucose in serums other than blood thanks to their enhanced sensitivity and selectivity ranges, in addition to their size and compatibility with electronic circuitry. This article was authored by Prashant Makram, Don Owens, and Juana Saros.