Colloidal Gold Diagnostic Reagent from Canada
Gold nanoparticle colloid conjugated with antibodies for lateral flow assays in pregnancy tests. Remains under HTS 2843.10.00.00 if imported as bulk colloid prior to conjugation.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• If pre-conjugated, may require FDA prior notice; bulk colloids do not
• Label as research chemical to avoid immediate medical device scrutiny
• Ensure stability data for long-sea transit without aggregation