3002.12.00.20 - Normal human blood sera, whether or not freeze-dried

This HTS category encompasses normal human blood sera, which are derived from the blood of human donors and do not contain specific antibodies against particular pathogens or diseases. The term "normal" is crucial, distinguishing these sera from therapeutic or diagnostic antisera. These products are utilized in various laboratory settings, including research, diagnostics, and as components in biological preparations. The classification explicitly includes preparations that have been freeze-dried, indicating that the form in which the serum is presented does not alter its classification.

It is important to differentiate this category from its sibling classifications. Specifically, 3002.12.00.10 covers human blood plasma, which is the liquid component of blood. 3002.12.00.30 pertains to human immune blood sera, which are specifically collected to contain antibodies against certain diseases or antigens. Furthermore, 3002.12.00.40 addresses Fetal Bovine Serum (FBS), clearly indicating its animal origin. The residual sibling category, 3002.12.00.90, is a catch-all for other unspecified blood fractions or immunological products within this heading.

As a leaf node, 3002.12.00.20 does not have further subdivisions. Therefore, classification within this code relies on confirming that the product is indeed normal human blood serum, not modified or specifically fortified with antibodies, and is not plasma or fetal bovine serum. Classification will hinge on the documented origin and composition of the product.