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HSChapter 38
U.S. imports of diagnostic and laboratory reagents (nesoi), including kits (HS 382219) totaled $326.4M in April 2026, traded with 56 countries.
Importers of Diagnostic and Laboratory Reagents (NESOI), Including Kits paid $26.6M in duties in April 2026 — an effective duty rate of 9.9% on $268.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Diagnostic and Laboratory Reagents (NESOI), Including Kits imports of $326.4M in April 2026 ran 13% below the year-to-date monthly average of $376.1M.
Last updated: April 2026 dataGermany and Singapore are the leading US import sources for this broad residual category, which captures all diagnostic and laboratory reagents — whether on a backing or not, in kit form or not — that are not specifically covered by the malaria, Zika, or blood-grouping subheadings. The US schedule further subdivides by chemical composition: lines 3822190010 and 3822190030 cover reagents containing antigens or antisera (with or without methyl chloroform), line 3822190040 covers other methyl chloroform–containing reagents, and 3822190080 captures all remaining diagnostic and laboratory reagents. The breadth of this heading means classification disputes are common, particularly for multiplex panels and combination kits that may straddle subheadings. FDA admissibility review applies to products intended for clinical diagnostic use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
CBP's general rule is that combination products are classified by the component that gives the article its essential character. A kit whose primary commercial purpose is malaria detection would likely fall under 382211, while a broad respiratory panel that incidentally includes a malaria marker might be classified under 382219. Obtaining a binding ruling from CBP before importation is the most reliable way to resolve this ambiguity.
Methyl chloroform (1,1,1-trichloroethane) is an ozone-depleting substance subject to EPA import restrictions under the Clean Air Act. Reagents containing it are broken out at the 10-digit level (3822190010 and 3822190040) so that EPA can track and enforce import controls. Importers of reagents containing this solvent must comply with EPA's ozone-depleting substance import allowance program in addition to standard FDA admissibility requirements.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| GERMANY | $54.8M | $116.9M | +$62.1M |
| CANADA | $35.9M | $60.7M | +$24.8M |
| CHINA | $15.5M | $66.2M | +$50.7M |
| UNITED KINGDOM | $34.8M | $25.0M | -$9.8M |
| FRANCE | $17.1M | $42.2M | +$25.1M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 3822190080 | DIAGNOSTIC OR LABORATORY REAGENTS, NESOI | $235.9M | 9.90% | $18.5M |
| 3822190030 | DIAGNOSTIC REAG. CONT ANTIGENS OR ANTISERA NESOI | $88.1M | 9.93% | $7.8M |
| 3822190040 | DIAGNOSTIC REAG. CONT. METHYL CHLOROFORM ETC NESOI | $1.5M | 7.95% | $120K |
| 3822190010 | DIAGNOSTIC REAG. CONT ANTIGENS & METHYL CHLOROFORM | $942K | 9.31% | $87K |
DIAGNOSTIC OR LABORATORY REAGENTS, NESOI
DIAGNOSTIC REAG. CONT ANTIGENS OR ANTISERA NESOI
DIAGNOSTIC REAG. CONT. METHYL CHLOROFORM ETC NESOI
DIAGNOSTIC REAG. CONT ANTIGENS & METHYL CHLOROFORM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3822190000 | DIAGNOSTIC OR LABORATORY REAGENTS INCL KITS, NESOI | $725.6M |
DIAGNOSTIC OR LABORATORY REAGENTS INCL KITS, NESOI
6.1M kg
PRODUCTS AND RESIDUALS OF CHEMICAL INDUSTRY, NESOI
HS 382499
CHEM ELEM DOPED, USED IN ELECTRON, DISCS WAFERS ET
HS 381800
SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND
HS 381512
SUPPORTED CATALYSTS, NESOI
HS 381519
ADDITIVE FOR LUB OIL CONT PETRO/BITUMINOUS MINOIL
HS 381121
ARTIFICAL GRAPHITE
HS 380110
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $39.9M | $184.0M | +$144.1M |
| Indiana | $55.9M | $54.8M | -$1.1M |
| Illinois | $34.1M | $59.7M | +$25.5M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHICAGO, IL | $44.6M | $141.7M | +$97.1M |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $19.5M | $92.1M | +$72.6M |
| NEW ORLEANS, LA | $19.1M | $52.6M | +$33.5M |