The market taxonomy for kit Types is organized around the collection mechanism, with four principal categories: Swab‑Based Kits, Brush‑Based Kits, Fluid‑Collection Devices, and Integrated Cartridge Systems. Swab‑Based Kits, subdivided into cotton swabs and nylon‑flocked swabs, dominate due to their low cost and familiarity among clinicians; the flocked variant offers superior sample release, enhancing analytical sensitivity. Brush‑Based Kits include plastic brush and gel‑coated brush subtypes, which are favored for deeper epithelial sampling and improved patient comfort in longitudinal studies. Fluid‑Collection Devices, such as capillary tubes and absorbent pads, provide quantitative volume control, making them suitable for hormone assays and metabolite profiling. Integrated Cartridge Systems combine collection and on‑board processing (e.g., lysis, nucleic‑acid stabilization) in a single unit, catering to point‑of‑care diagnostics that require minimal handling. While Swab‑Based Kits hold the largest share owing to broad clinical adoption, the growth of Integrated Cartridges is accelerating as decentralized testing gains traction, thereby diversifying the overall market composition.