Prior to cell enumeration by CytoQuest? CR, blood sample pre-treatment involving cell separation and PBMC extraction from whole blood are necessary. This AbVideo shows detailed Leucosep preparation. Abnova’s CytoQuest? CR is a non-invasive system for capture, enumeration, isolation and retrieval of circulating rare cells (CRCs), including circulating tumor cells (CTCs), circulating stem cells (CSCs), and circulating fetal cells (CFCs). Please visit Abnova website for more information.