Segmentation by type classifies the market into recombinant, purified native, and synthetic analog categories, each with a specific role in the overall market composition. Recombinant NGF, produced via bacterial or mammalian expression systems, dominates due to its scalability, batch‑to‑batch consistency, and lower production cost, capturing the largest proportion of sales. Purified native NGF, extracted from mouse tissue, remains essential for studies requiring authentic post‑translational modifications, albeit representing a smaller niche because of limited supply and higher price points. Synthetic analogs, engineered peptides that mimic NGF activity, are gaining traction for targeted therapeutic screening and structure‑function analyses, contributing a modest but growing share. The relative weighting of these types is shaped by factors such as regulatory acceptance, assay sensitivity requirements, and cost‑effectiveness, collectively defining the market’s structural balance.