In terms of types, the market is divided among ELISA, chemiluminescent immunoassay (CLIA), radioimmunoassay (RIA), and fluorescence immunoassay (FIA) kits, each addressing distinct workflow and sensitivity requirements. ELISA kits dominate with an estimated 55% share, favored for their established protocols, moderate cost, and compatibility with high‑throughput laboratory automation. CLIA kits, comprising about 25% of sales, deliver superior analytical sensitivity and faster turnaround, aligning with hospital labs seeking to streamline assay portfolios. RIA kits, though declining, retain a 12% niche due to legacy usage in specialized research settings where ultra‑low detection limits are critical. FIA kits, representing the remaining 8%, are emerging in point‑of‑care contexts because of rapid readout and minimal sample preparation. This type‑based taxonomy clarifies how product‑level innovation and cost structures shape overall market dynamics, guiding manufacturers in allocating R&D resources and forecasting segment‑specific growth.