Normal Human Serum AB Positive from Mexico
Normal human serum AB positive is sourced from type AB donors, valued for low isoagglutinin levels in sensitive assays. Under HTS 3002.12.00.20, it qualifies as normal human blood sera for diagnostic and research uses without targeted modifications. Commonly used in blood banking and flow cytometry protocols.
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
• Specify blood type and pooling details on commercial invoice to justify normal serum status
• Comply with USP <1043> ancillary materials guidelines for cell therapy imports
• Pre-clear with FDA via eCTD for repeated shipments to minimize border inspections