This paper presents the analysis and implementation of a non-invasive blood glucose monitor using near- infrared absorption technique. The architecture is composed by two light emitters, with a wavelength of 940 nm and 805 nm. In a different way than the most of the structures presented in the literature, our prototype considers the absorptive influence of hemoglobins in the measure. The results were carried out in-vitro through the a developed electronic patient that emulates the basic characteristics of absorption in biological tissues. The experimental results obtained from the prototype, verify the funcionality of the topology and clarify some divergences presented among some state of the art references.