FAQ-3646
What should I do if cryoprecipitates form while thawing a frozen plasma sample?
If cryoprecipitates cannot be resolved completely by vortexing, the sample should be centrifuged to prevent precipitates from blocking the column. To ensure that no cfDNA is co-precipitated, centrifugation can be performed at a lower speed (at 6,800xg for 3 minutes at room temperature, as stated in the Protocol Sheet for the QS DSP Circulating DNA Kit).
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The PAXgene Blood ccfDNA Tube is a plastic, closed, evacuated tube for the collection, anticoagulation, transport and storage of human whole blood samples and the stabilization of ccfDNA. When the tube is used in conjunction with the QIAsymphony PAXgene Blood ccfDNA Kit, the QIAGEN QIAamp MinElute ccfDNA Kit or the QIAamp Circulating Nucleic Acid Kit, high-quality ccfDNA can be isolated for use in downstream analytical assays.
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