Human Immunodeficiency Virus (HIV) is a global epidemic that causes acquired immunodeficiency syndrome (AIDS) with time. Approximately 14% (one in seven) of HIV-infected people do not know their HIV status till 2022 [1]. These people have a higher chance of spreading HIV without knowing its consequences. So, there is an unmet need for more HIV testing techniques to isolate and identify all HIV-infected people as soon as after their infection. Till now, there are no available techniques to detect HIV in saliva due to HIV’s low concentrations and the inhibition properties of saliva. We developed a nickel-based electrochemical method to detect HIV in saliva for the first time. This method does not require any biorecognition element for the detection, thus making it label-free. The difference in current responses during the chronoamperometry helps to distinguish HIV from saliva. It happens due to the blocking of the formation of NiOOH in the presence of HIV on the nickel surface. This method has high sensitivity and exhibits a linear current trend with increasing concentrations of HIV culture fluid. Also, it has a lower detection limit of around 50 copies/mL and a high selectivity of HIV over Epstein-Barr Virus (EBV), which is the most common co-infection for HIV patients. Also, the most common route to transmit EBV is through saliva. So, this novel method will create a new opportunity for the commercialization of non-invasive HIV testing techniques that minimize the spreading rate of HIV by fastening HIV testing.[1] “Global HIV & AIDS statistics — Fact sheet.” Accessed: Nov. 26, 2023. [Online]. Available: https://www.unaids.org/en/resources/fact-sheet