The development of staining device for lab microscope plays a crucial role in enhancing biological sample visualization and analysis. By improving contrast and visibility, this device aids in obtaining high-quality and clear images of the sample's structures and components. Traditionally, the determination of platelet count involves a manual process that includes collecting a blood sample, staining it, and observing it under a lab microscope with the assistance of a skilled medical lab technician. To address the limitations of this manual approach, we propose a glass strip blood smear design as an alternative method, focusing specifically on dengue virus detection. In this method, the blood sample is obtained through a simple pricking procedure and collected into a specially designed glass bio strip, similar to a glucose test strip. Within the strip, automated staining occurs, preparing the sample for observation. Unlike plastic strips used in sugar tests, glass bio-strip provides suitable surface for microscopic examination, whether using a lab microscope or a mobile phone microscope. The significant advantage of this alternative method is that it enables individuals without a medical background to perform platelet count analysis