The AllPrep RNA/Protein Kit is designed to purify total RNA and native protein simultaneously from the same sample of cultured cells. For experiments to validate siRNA-mediated knockdown at the mRNA and protein levels, the kit streamlines sample preparation and allows the number of cell cultures to be significantly reduced. In addition, knockdown analysis is more reliable since RNA and protein come from the same sample.The AllPrep RNA/Protein Kit is part of QIAGEN’s range of closely integrated products for RNAi and gene expression analysis. These products provide highly reproducible and sensitive results. Products include optimized PCR master mixes, ready-to-run assays, siRNAs, and transfection reagents. Standardization of RNAi and gene expression analysis workflows by these products have contributed to success in many areas of biomedical research.