The Whole Blood Separation Membrane segmentation by application is dominated by three distinct uses: diagnostic testing, therapeutic processing, and research & development. Diagnostic testing accounts for roughly 45% of market revenue, driven by high-volume point‑of‑care platforms that require rapid plasma extraction for glucose, cholesterol, and infectious disease assays. Therapeutic processing, contributing about 35%, encompasses plasma‑derived product manufacturing and intra‑operative blood salvage, where membrane reliability directly impacts product purity and patient safety. The remaining 20% is allocated to research & development, where academic and biotech laboratories employ membranes for method development, validation studies, and novel biomarker discovery. Each application segment influences the overall market size by dictating membrane specifications—such as pore size distribution, flux rate, and biocompatibility—and by shaping demand cycles linked to healthcare spending, regulatory approvals, and scientific innovation.