# HS code 3822.90: 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, other than those of heading 30.06; certified reference materials > HS code 3822.90 covers 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, other than those of heading 30.06; certified reference materials, other than those classified in 3822.11, 3822.12, 3822.13 and 3822.19. It sits in heading 38.22 (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, other than those of heading 30.06; certified reference materials) in chapter 38 (miscellaneous chemical products). Other goods of heading 38.22 are classified under 3822.11 (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, for malaria), 3822.12 (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, for Zika and other diseases transmitted by mosquitoes of the genus Aedes), 3822.13 (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, for blood-grouping) and 3822.19 (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, other). National tariff lines under 3822.90 are live on border.bot for the United States (1 line, also used by 1 other country). Source: https://border.bot/hs-codes/382290 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 38](https://border.bot/hs-codes/38) / [38.22](https://border.bot/hs-codes/3822) / [3822.90](https://border.bot/hs-codes/382290) ## Key facts - HS code: 3822.90 - Covers: 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, other than those of heading 30.06; certified reference materials - Heading: [38.22: 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, other than those of heading 30.06; certified reference materials](https://border.bot/hs-codes/3822) - Chapter: [38: Miscellaneous chemical products](https://border.bot/hs-codes/38) - Edition: HS2022 - Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/382290) ## What this code covers HS code 3822.90 covers 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, other than those of heading 30.06; certified reference materials, other than those classified in 3822.11, 3822.12, 3822.13 and 3822.19. The legal text of the subheading is “Other”, in HS2022. ## What it doesn’t cover Other goods of heading 38.22 are classified under 3822.11 (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, for malaria), 3822.12 (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, for Zika and other diseases transmitted by mosquitoes of the genus Aedes), 3822.13 (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, for blood-grouping) and 3822.19 (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, other). - [3822.11](https://border.bot/hs-codes/382211) 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: For malaria - [3822.12](https://border.bot/hs-codes/382212) 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: For Zika and other diseases transmitted by mosquitoes of the genus Aedes - [3822.13](https://border.bot/hs-codes/382213) 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: For blood-grouping - [3822.19](https://border.bot/hs-codes/382219) 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: Other ## How it is structured 3822.90 is a six-digit subheading. Its first two digits, 38, are the chapter; the first four, 3822, are heading 38.22; the last two, 90, identify the subheading within the heading. Countries add their own digits after these six for their national tariff lines. - Chapter 38: Miscellaneous chemical products - Heading 38.22: 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, other than those of heading 30.06; certified reference materials - Subheading 3822.90: Other ## In other countries National tariff lines under 3822.90 are live on border.bot for the United States (1 line, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/382290): 1 line, used by 1 other country - Previous subheading: [3822.19](https://border.bot/hs-codes/382219) 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: Other - Next subheading: [3823.11](https://border.bot/hs-codes/382311) Industrial monocarboxylic fatty acids; acid oils from refining: Stearic acid ## Frequently asked questions ### What does HS code 3822.90 cover? HS code 3822.90 covers 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, other than those of heading 30.06; certified reference materials, other than those classified in 3822.11, 3822.12, 3822.13 and 3822.19. ### Which heading and chapter is HS code 3822.90 in? HS code 3822.90 is in heading 38.22 (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, other than those of heading 30.06; certified reference materials) in chapter 38 (miscellaneous chemical products). ### Where are goods of heading 38.22 classified when 3822.90 doesn’t fit? Other goods of heading 38.22 are classified under 3822.11 (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, for malaria), 3822.12 (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, for Zika and other diseases transmitted by mosquitoes of the genus Aedes), 3822.13 (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, for blood-grouping) and 3822.19 (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, other). ### Which countries’ tariffs list national lines under HS code 3822.90? National tariff lines under 3822.90 are live on border.bot for the United States (1 line, also used by 1 other country). ## Sources and updates The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026. This page was last updated on 11 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Machine-readable: https://border.bot/hs-codes/382290.json