The ANR project Acostovie aims to develop a sytem for serological diagnosis of Covid-19 (its spike protein) using a dual technology based on acoustic and optical biosensors. Led by the INMG institute of the Claude Bernard University of Lyon, in partnership with the L2N laboratory of the UTT of Troyes, Cristal innov will develop and supply a high-precision quartz resonator, a key part for the accuracy of this innovative diagnostic kit. A first prototype, designed and manufactured by TechnoFab (Technological FabLab at Crystal innov), is scheduled for this summer.