CellSave Preservative Tubes are registered IVD products.The tube contains 300µl of Na2EDTA and a proprietary cell preservative. This preserves morphology and cell surface antigen expression of epithelial cells and leukocytes.Each tube is evacuated to withdraw 10.0ml of venous whole blood are optimized for use with the Circulating Tumor Cell (CTC) Test, Circulating Endothelial, Epithelial, Melanoma and Profile test kits.CellSave tubes provide an optimized cell preservative that:Stabilizes circulating tumor cells (CTCs) for up to 96 hours at ambient temperature (15-30°C), allowing shipment of samples from remote locations for analysisImproves the reproducibility and reliability of CTC analysisWorks with standard phlebotomy supplies for venous blood collection