Enzyme Immunoassay Kit for Vitamin D Testing from China
Competitive ELISA kit for 25-hydroxyvitamin D quantification in serum using enzyme-labeled tracer and magnetic microparticles. Prepared diagnostic reagent classified under HTS 3822.19.0080.
Duty Rate — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include method correlation data to CLIA/cGMP validated assays
• Specify magnetic particle size and coating chemistry
• Declare as quantitative clinical chemistry reagent, not vitamin supplement