The Blood STASIS™ 21-ccfDNA is a plastic, evacuated tube used for collection, anti-coagulation, stabilization, transport, and storage of venous whole blood as well as for the preservation of circulating, cell-free DNA (ccfDNA). Blood STASIS™ 21-ccfDNA tube helps prevent apoptosis of nucleated blood cells, thus prevents release of blood genomic DNA, and allows isolation of high purity ccfDNA. ccfDNA is stable for up to 21 days at 40C to 370C.

The Blood STASIS™-CTC is a plastic, evacuated tube used for collection, anti-coagulation, stabilization, transport, and storage of venous whole blood as well as for the preservation of white cells at room temperature for convenient transport and storage. The Blood STASIS™-CTC Tube has a non-fixative additive inside, that helps maintain the viability of blood cells including circulating tumor cells (CTCs); and peripheral mononucleosis blood cells (PMBCs- ie B cells, and T cells).