3002.90.52.20 - Antiallergenic preparations

This HTS classification, 3002.90.52.20, specifically covers antiallergenic preparations that fall under the broader category of immunological products. These are substances designed to prevent or alleviate allergic reactions by modulating the immune system's response to specific allergens. This includes a variety of treatments, such as immunotherapy solutions and desensitizing agents, intended for the management of conditions like hay fever, asthma, and other hypersensitivity disorders.

Within the "Other" subcategory of blood fractions and immunological products, this code is distinct from "Whole human blood" (3002.90.52.10), which refers to unadulterated blood for transfusion or other medical applications, and "Other" (3002.90.52.50), which encompasses remaining immunological products not otherwise specified. Antiallergenic preparations are differentiated by their targeted action against allergic mechanisms, rather than their general therapeutic, prophylactic, or diagnostic uses as seen in some other immunological products.

As this is a leaf node in the HTS classification, there are no further subcategories. Classification at this level is determined by the specific nature of the preparation as being intended to counteract or reduce an allergic response. Importers and exporters should ensure that the product's labeling, supporting documentation, and intended use clearly indicate its antiallergenic properties to correctly apply this specific tariff code.