QIAamp DSP Circulating NA Kit. For concentration and purification of free-circulating DNA, RNA, and miRNA from human samples. Kit contents: Qiagen QIAamp DSP Circulating NA Kit, 50 preps, For Concentration and Purification of Free-circulating DNA, RNA and miRNA from Human Samples, Includes QIAamp Mini Columns, Column Extenders, VacConnectors, Qiagen Proteinase K, Reagents, Buffers and Collection Tubes. Benefits: Concentrated nucleic acids. high input, low elution volumes. Efficient recovery of fragmented DNA, RNA, and miRNA. No organic extraction or ethanol precipitation. Removal of contaminants and inhibitors