Which materials can be used as input samples for the QIAsymphony DSP Circulating DNA Kit?
FAQ ID - 3702

Human plasma that has been collected in EDTA or citrate blood collection tubes or ccfDNA stabilized blood collection tubes can be used as sample material. In addition, human urine (non-stabilized or stabilized) can also be used.

Serum is not recommended as sample material because it contains a large background of genomic DNA.