Within the Types segmentation, reagents are classified by technology platform: enzyme‑linked immunosorbent assay (ELISA), chemiluminescence immunoassay (CLIA), multiplex bead‑based assays, and rapid point‑of‑care (POC) formats. ELISA remains the dominant type, contributing roughly 45 % of total market revenue because of its established performance, cost‑effectiveness, and widespread laboratory adoption for quantitative autoantibody detection. CLIA, with higher sensitivity and automation compatibility, captures about 30 % of the market, especially in high‑throughput hospital labs. Multiplex bead‑based assays, enabling simultaneous detection of multiple autoantibodies, hold a 15 % share, reflecting growing preference for comprehensive panels in specialty centers. Rapid POC reagents, though currently niche, represent the remaining 10 % and are expanding due to demand for decentralized testing in outpatient settings. This market taxonomy of reagent types illustrates how technological differentiation influences purchasing patterns and overall market growth.