Oncology MRD ctDNA Reference Standard is a highly multiplex quality control material with ddPCR verified low, gradient allelic frequencies (0%, 0.005%, 0.05% and 0.5%). With our unique fragment technology, this MRD reference standard set is patient sample liked among Size distribution, library yield and complexity consistent. It is ideal for the determination of LoD and validation of assay sensitivity. Additionally, it is also an cost-efficiency reference materials to routinely monitor the performance of pan-cancer NGS panels.