Recombinant Peptide segmentation by application delineates four principal categories—therapeutics, diagnostics, research tools, and industrial processes. Therapeutic peptides, which include insulin analogues, GLP‑1 agonists, and peptide‑based vaccines, dominate the market, accounting for roughly 45 % of total revenue, driven by chronic disease prevalence and expanding biologics pipelines. Diagnostic applications encompass peptide‑based biomarkers, imaging agents, and assay reagents, contributing an estimated 25 % as hospitals and labs adopt high‑specificity tests. Research‑grade peptides, such as custom‑synthesized epitopes and affinity ligands, support academic and contract‑research organisations, representing about 20 % of the market; growth is linked to increasing molecular‑biology projects and CRISPR‑related studies. Industrial uses, including food‑grade additives, biocatalysts, and cosmetic actives, form the remaining 10 %, reflecting niche but steady demand. Collectively, these application segments shape the overall Recombinant Peptide market size, with therapeutic demand exerting the strongest upward pressure.