The Whole Blood Polymorphonuclear Cell Isolation Kit market pertains to specialized tools and reagents used for isolating polymorphonuclear cells (PMNs), such as neutrophils, from whole blood for research and clinical applications. These kits are critical in immunology, oncology, and infectious disease research, enabling high-purity cell isolation for advanced diagnostic and therapeutic studies. The global market size in 2025 was estimated at $250 million, driven by rising demand for precision medicine and cell-based therapies. With a compound annual growth rate (CAGR) of 6.8% projected from 2026 to 2033, the market is poised for steady expansion. Key macro drivers include advancements in immunotherapy R&D, increasing prevalence of autoimmune diseases, and regulatory support for biologics. Technological innovations in automated cell isolation systems and growing biobanking activities are also fueling adoption. North America dominates the market due to established biopharma infrastructure, while Asia-Pacific is the fastest-growing region, propelled by rising investments in cell therapy startups and government-funded R&D.