Product classification

HS code for Diagnostic reagents: 3822.19

Reagents, diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, n.e.c.in item 3822.1.

Classification of diagnostic reagents under HS 3822.19

Diagnostic reagents are classified under HS code 3822.19. This code falls within Chapter 38, which covers miscellaneous chemical products. Heading 38.22 is dedicated to diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, and certified reference materials. The subheading 3822.19 is a residual category for reagents that do not fall under more specific subheadings like 3822.11 (for malaria) or 3822.12 (for Zika). These reagents are used in medical, veterinary, or laboratory environments to detect or measure substances through chemical or biological reactions. The classification depends on the reagent being "prepared"—meaning it is not a single chemically defined element or compound (which would be in Chapter 28 or 29) but a mixture or a substance specifically formulated for a diagnostic use. This includes reagents used for blood analysis, urinalysis, and other clinical tests, provided they are not classified as medicaments under Chapter 30. The presence of a backing, such as paper, plastics, or wood, often characterizes these products, though the code also covers prepared reagents without a backing if they are put up in the form of kits.

Covers
  • Clinical chemistry reagents
  • Urinalysis test strips
  • Blood glucose test strips (non-digital)
  • Coagulation reagents
  • Enzyme-linked immunosorbent assay (ELISA) kits
Also under 3822.19
  • Roche Elecsys
  • Abbott Architect
  • Siemens Advia Centaur
  • BD BBL Sensi-Disc
  • Bio-Rad Bio-Plex

Codes often confused with 3822.19

Common mistake. Diagnostic reagents are often confused with HS code 3002.12, which covers antisera and other blood fractions. If the reagent is based on human or animal blood components like antibodies, it may belong in Chapter 30. Another common error is using 3821.00, which is specifically for prepared culture media for the development of micro-organisms, rather than for diagnostic testing of a sample.

3006.30Pharmaceutical goods; opacifying preparations for x-ray examinations, diagnostic reagents designed to be administered to the patient3002.12Blood, human or animal, antisera, other blood fractions and immunological products; antisera and other blood fractions3821.00Prepared culture media for the development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells

Top exporters and importers of HS 382219 (the code used for diagnostic reagents), 2025

In 2025, the largest exporter of HS 382219 (the code used for diagnostic reagents) in UN Comtrade data was the United States, with 26% of world exports; the largest importer in UN Comtrade data was the United States, with 13% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 382219, not only diagnostic reagents.

Top exporters 2025 · share of world exports

  1. 1 United States $10.5B
  2. 2 Germany $8.5B
  3. 3 Netherlands $3.5B

World total: $40.5B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $5.6B
  2. 2 Germany $5.2B
  3. 3 China $4.3B

World total: $42.8B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for diagnostic reagents

Brazil splits HS 3822.19 into 5 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about diagnostic reagents

What is the HS code for Diagnostic reagents?

The HS code for Diagnostic reagents is 382219 (Reagents; diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits; n.e.c.in item 3822.1). The HS code for diagnostic or laboratory reagents not elsewhere specified is 3822.19.

How do I classify Diagnostic reagents for customs?

Diagnostic reagents is classified under HS code 382219 — Reagents; diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits; n.e.c.in item 3822.1. This is a 6-digit subheading level code.

Are pure chemicals classified here?

No, pure, chemically defined elements or compounds are classified in Chapter 28 (inorganic) or Chapter 29 (organic), even if they are intended for laboratory use.

Which countries are the top exporters of diagnostic reagents (HS 382219)?

In 2025, the top exporters of HS 382219 (the code used for diagnostic reagents) in UN Comtrade data were the United States ($10.5B, 26% of world exports), Germany ($8.5B) and the Netherlands ($3.5B). World exports came to about $40.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of diagnostic reagents (HS 382219)?

In 2025, the top importers of HS 382219 (the code used for diagnostic reagents) in UN Comtrade data were the United States ($5.6B, 13% of world imports), Germany ($5.2B) and China ($4.3B). World imports came to about $42.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Diagnostic reagents the same in all countries?

The base HS code 382219 for Diagnostic reagents is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for diagnostic reagents in Brazil?

Brazil splits HS 382219 into 5 NCM codes, so the right one for diagnostic reagents depends on the product's details: 3822.19.10 (Blood or urine test reagent paper rolls), 3822.19.20 (Blood glucose test strips), 3822.19.30 (Microbial-origin diagnostic reagents), 3822.19.40 (Monoclonal antibodies in bovine albumin buffer), 3822.19.90 (Other diagnostic or laboratory reagents).