Liquid Normal Human Blood Serum for Cell Culture from Mexico
Liquid normal human blood serum is pooled from screened donors and heat-inactivated for use in mammalian cell culture. Classified under HTS 3002.12.00.20 as unmodified normal human blood sera prepared for therapeutic, prophylactic, or diagnostic uses in research. It provides essential growth factors without specific immunological modifications.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include heat-inactivation and sterility test results in import documentation to confirm compliance with biological product standards
• Label clearly as 'normal human serum' to prevent confusion with vaccine or toxin preparations under nearby subheadings
• Verify supplier's AABB accreditation for donor testing to avoid CBP holds on bio-safety grounds