It is known that there is a number of VOC (volatile organic compounds) in exhaled human breath that can be used as biomarkers [1,2]. To reach screening of the patients the exhalation gas sensor should be light, cheap and sensitive. Semiconductor gas sensors can offer advantages in size, but they are characterized with a long response time, short lifespan, lack of selectivity [3-5]. A new approach of sensing using semiconductors is required and it is achieved by using optically induced semiconductor [10]. The sensor could be used to detect different gases that molecules have a dipole moment non-equal to zero. For instance, relative output signal of the sensor increases to +51% and time-constant relative value to +103% in the presence of saturated acetone vapor corresponding to air environment. By combining both gained and previous results, it is possible to resume that optically induced semiconductor is able to detect type-1 diabetes.