The tumor tissue origin gene detection kit is the first pan-cancer species, multi-gene mRNA detection kit approved in China. It is suitable for formalin-fixed, paraffin-embedded tissues of patients with poorly differentiated or suspected metastatic solid tumors. sample. By detecting 90 tissue-specific gene expression patterns (Gene Expression Patterns) in the samples, and using it in conjunction with the gene analysis software of tumor tissue origin, it is used to identify the tissue origin of tumor samples.