Abstract— Passing multiple light wavelengths through a blood
sample makes it possible to investigate the presence and
composition of cells, metabolytes and analytes such as blood cells,
glucose, lactate and oxygen, providing valuable indications for
diagnostic and health monitoring. In this paper, we present a test
prototype of a multi-wavelength blood spectroscopy platform
integrated with a microfluidic substrate to collect and convey blood
samples through a series of micro-LEDs and a photo-detector. This
spectroscopy platform is a proof of concept for a system that can
collect absorbance and transmittance parameters of blood samples
at several wavelengths within the visible and NIR spectrum, and
transmit them wirelessly to a base station for real-time calculation
and analysis. In-vitro measurements are performed with the
proposed prototype with 5 channels covering wavelength from 400
nm to 940 nm. A full characterization results of the proposed devic