3002.12.00.40 - Fetal Bovine Serum (FBS)

This HTS classification, 3002.12.00.40, specifically covers Fetal Bovine Serum (FBS). FBS is an animal serum derived from the blood of a bovine fetus. It is widely used as a cell culture supplement in biological research and industrial applications due to its rich content of growth factors and other essential nutrients necessary for cell growth and maintenance.

Distinguishing FBS from its sibling categories, it is important to note that this classification is specifically for *bovine* fetal serum, not human blood products like plasma or human immune sera. While all fall under the broader category of "Antisera, other blood fractions and immunological products," FBS's origin and primary application in cell culture differentiates it from therapeutic or diagnostic human blood-derived products. It is also distinct from "Other" categories, which would encompass a wider array of less specific animal blood fractions or immunological products.

As this HTS code represents a leaf node, there are no further subcategories within this specific classification. Classification at this level is based on the specific identification of Fetal Bovine Serum. When encountering shipments, verification should focus on the product's origin (fetal bovine), its form, and its intended use, which is predominantly for laboratory and industrial cell culture.