The document lists various ELISA kits for detecting levels of proteins involved in cancer. For each kit, it provides the product code, protein name being detected, detection range, sensitivity, and test method. The kits use ELISA (enzyme-linked immunosorbent assay) to detect proteins including TP53, CDKN2A, KRAS, EGFR, CCND1, VEGF-A, IL-6, PDGFRβ, ALB, BRAF, JAK2, ERα, MMP-2, BRCA2, TM, MMP-9, and BRCA1 within certain concentration ranges with good sensitivity. All kits employ a sandwich ELISA test method.