The types segment classifies Cholesterol Oxidase products into three core categories: native enzyme, recombinant enzyme, and immobilized enzyme, each further divided by formulation (lyophilized powder, liquid suspension, and enzyme‑coated matrix). Native enzyme, extracted from bacterial strains such as Streptomyces sp., represents the legacy supply chain and captures roughly 35 % of sales, favored for its established performance in diagnostic kits. Recombinant enzyme, produced via genetically engineered E. coli or yeast hosts, now commands about 45 % of the market due to enhanced purity, scalability, and consistency, meeting the stringent quality requirements of both clinical and pharmaceutical customers. Immobilized enzyme—where the biocatalyst is fixed on carriers like agarose beads or nanomaterials—accounts for the remaining 20 %, addressing the need for reusable biocatalysts in continuous processing and high‑throughput screening. This type‑based taxonomy clarifies how formulation choices influence pricing, adoption rates, and ultimately the total Cholesterol Oxidase market size.