The Liquid Biopsy Solid Tumor test uses next generation sequencing (NGS) performed on cell-free DNA (cfDNA) to identify molecular abnormalities in 275 genes implicated in solid tumors...The Liquid Biopsy Solid Tumor is recommended for monitoring patients after establishing the molecular abnormalities using a baseline tissue sample. It can be used for detecting minimal residual disease (MRD) or the development of specific resistant mutations related to therapy (e.g. EGFR T790M mutation).