**3. Conclusion**

In this chapter, up‐to‐date, advances in CMOS circuits and systems based lab‐on‐a‐chip are provided and discussed. Additionally, distinctive applications of CMOS lab‐on‐a‐chip are presented. CMOS‐based lab‐on‐a‐chip guarantees many advantages to be provided to the biology and medicine fields. These advantages are portability, disposability and miniaturiza‐ tion. Also, these advantages allow scientists to do complex experiments anywhere with portable devices. However, until now, there is an unmet need for lab‐on‐a‐chip to effectively deal with the biological systems at the cell level.
