The Quick-RNA Miniprep Plus Kit is one of the most innovative RNA isolation kits available, designed for the easy, reliable, and rapid isolation of DNA-free RNA from cells, all tissue types, whole blood, and biological fluids. The provided DNA/RNA Shield stabilizes samples, allowing them to be stored without the need for immediate freezing or processing for up to one month. Furthermore, DNA/RNA Shield™ inactivates RNases as well as microbial pathogens (viruses, bacteria, etc.). The procedure combines a unique buffer system with Zymo-Spin Column technology to yield high quality total RNA (including small RNAs 17-200 nt). Simply add DNA/RNA Shield and Proteinase K to extract total RNA from any tissue, then purify the RNA using the Zymo-Spin Column. The result is highly-concentrated, DNA-free RNA that is suitable for RT-PCR, hybridization, sequencing, etc. In addition, the kit can be used for the enrichment of small and large RNAs in two separate fractions.