Differential gene expression by RNA profiling is a universal and critical step in space biology experiments, which seek to link specific molecular events with disease phenotypes. Current RNA preparation methods are tedious, require substantial astronaut time, and necessitate exposure to toxic chemicals. They often have poor, unreliable yields due to RNase contamination. Our overall objective is to develop and commercialize a microfluidics based miniaturized platform (MED-RNA) that can fully automate the complex process of RNA extraction. Starting from harvested whole mammalian cells in a culture medium, MED-RNA will lyse, capture, extract/isolate and freeze/store RNA content for later analysis, in a fully integrated fashion with minimal user intervention. In addition to higher yields and faster process times, losses and contamination will be minimized as a result of the miniaturization and automation. A novel and unique plastic card based fabrication technology from Micronics Corp. will be leveraged for low-cost microfabrication. In Phase I, we will develop detailed design for the microfluidic lab card and the integrated system. We will also fabricate and demonstrate critical components (lysis and capture) of MED-RNA. The design process will be based on the state-of-the-art, multiphysics biochip design software from CFDRC. In Phase II, a fully integrated microfluidic lab card (including storage) will be developed and demonstrated on chosen cell lines.