Do tissue samples require pretreatment before loading onto the QIAsymphony SP for DNA extraction?

Yes. Samples have to be completely lysed and homogenized prior to automated processing on the QIAsymphony SP platform using the QIAsymphony DSP DNA Mini Kit. Tissue samples are lysed by proteinase K digestion. FFPE tissue samples are deparaffinized with Deparaffinization Solution or xylene/ethanol and lysed by proteinase K digestion. Insoluble material is pelleted by centrifugation. Lysates are placed on the QIAsymphony SP for purification of DNA (see protocol sheets for details).