Types of allergen extracts are categorized into natural and synthetic derivatives, each with distinct contributions to market dynamics. Natural extracts, sourced from environmental allergens (e.g., pollen, dust mites) or food allergens (e.g., peanuts, dairy), constitute ~85% of the market due to their clinical specificity and regulatory approval for diagnostics and immunotherapy. Their dominance is sustained by existing infrastructure for purification and standardization. Synthetic extracts, including recombinant allergens and chemically synthesized peptides, are emerging as a ~15% segment, driven by demand for consistent, contamination-free products and advancements in biotechnology. The synthetic category is particularly influential in research settings, where tailored allergen variants are required for studying molecular mechanisms. This duality in Allergen Extract segmentation reflects evolving technological capabilities and unmet clinical needs.