Complementary Metal-Oxide Semiconductor (CMOS)-based microanalysis involves a wide variety of devices, technologies, methods, and approaches, as extensively detailed in scientific literature. For example, we can find the use of CMOS- in investigations on pathological tissues as image sensors, or as implantable microimagers, micro-electro-mechanical systems, electrophoretic systems, CMOS chips for electrical sensing of microfluidic transport, CMOS chemical microsensors, fluorescence integrated sensors, amperometric sensors, CMOS electronics and memristive biosensors, as well as coupled with microfluidics. The handbook published some years ago by Cambridge University Press about bioelectronics that contains 44 chapters, and a more recent book on sensors in press demonstrate the rapid growth of the field. Therefore, in this chapter we will highlight important state-of-the-art CMOS technologies directing readers for further reading.