Abstract: Sample cartridge, valve assembly and processing methods for providing mechanical lysis, chemical lysis or both for a given fluid sample are provided herein. Such systems can include a sample processing cartridge having a valve assembly configured for transport of the processing of fluid sample within the sample cartridge. The valve assembly can include a valve body and cap that secure a filter therebetween and facilitate inflow of mechanical or chemical lysing agents as needed for a fluid sample. Assay workflows for performing both mechanical and chemical lysis of a fluid sample within the same workflow of a single universal sample cartridge are also provided.