Liquid Biopsy is a minimally invasive test done on a sample of blood to look for circulating tumor cells (CTC) in the blood or for cell free DNA from tumor or fetus cells that are in the blood. A liquid biopsy may be used to help find cancer at an early stage or conduct non-invasive prenatal tests (NIPT). Biochain offers a wide range liquid biopsy products including reagents, kits and tools to empower your research.cfPure® Cell Free DNA Extraction Kit is one of our featured liquid biopsy products. It is a magnetic bead-based DNA extraction kit designed to isolate circulating cell free DNA (cfDNA) from human plasma and serum. Check the categories below to learn more about the liquid biopsy products Biochain has to offer.