The document lists various ELISA kits for detecting human proteins including PTEN, IL-6, TGF-β1, MMP-9, VEGF-A, IL-1β, TNF-α, PTGS2/COX-2, sCD44, GDNF, MMP-2, bFGF/FGF2, HGF, ABCG2, and SOD1. For each kit, it provides the product name, detection range, sensitivity, and test method which is sandwich ELISA for all except SOD1 which is competitive ELISA. The kits can be used to detect these proteins within the listed concentration ranges with high sensitivity for applications such as research on vocal cord cancer and other life science research.