DEA Form 357

DEA Form 357 (“Application for Permit to Import Controlled Substances”) is the application a DEA registrant files with the DEA’s Diversion Control Division to bring a specific quantity of a controlled substance into the United States for a scientific, research, analytical, or other legitimate purpose — without that registrant holding DEA’s separate “Importer” registration category. It is the mechanism most research labs, university departments, and analytical/reference laboratories actually use when a needed controlled-substance material (a reference standard, an analytical reagent, a study compound) is sourced from a foreign supplier, as opposed to the standing import authority that dedicated commercial importers hold. Filing and approval of Form 357 fall under the Controlled Substances Import and Export Act as implemented in DEA’s regulations at 21 CFR Part 1312 (Importation and Exportation of Controlled Substances).

What Makes Something an Instance of a DEA Form 357 Filing

Three conditions together distinguish a genuine DEA Form 357 filing from a routine domestic purchase or a full commercial import operation:

• The applicant already holds an underlying DEA registration. Form 357 does not grant authority to possess or handle a controlled substance in the first place — it authorizes moving a specific quantity of a substance the registrant is already authorized to handle (for example, under a Schedule I researcher registration or an analytical-lab registration) across the US border for that already-approved purpose.
• The substance is entering the United States from a foreign source. A domestic purchase from a DEA-registered US supplier does not require an import permit at all; Form 357 is specific to cross-border acquisition.
• The purpose is scientific, research, analytical, or another legitimate non-resale use — not the establishment of an ongoing commercial importing business, which is handled through DEA’s separate Importer registration category rather than a per-shipment Form 357 application.

Who Actually Files a DEA Import Permit Application

Despite the generic “importer” framing many procurement staff first encounter, Form 357 is overwhelmingly used by registrants who are not registered importers: university and hospital research laboratories, forensic and clinical toxicology labs, and analytical/reference-standard laboratories that need to bring in a controlled substance occasionally, tied to a specific study or testing need, rather than as a recurring line of commercial trade. A lab that finds itself needing a DEA import permit for the first time is typically discovering that its existing DEA registration (the standard Certificate of Registration covering research, analytical lab, or similar activity) does not by itself authorize crossing a controlled substance over the border — that authorization is the separate, shipment-specific step Form 357 provides.

What the Application Requires

A Form 357 application identifies, at minimum: the controlled substance and its DEA Controlled Substance Code Number, the schedule it falls under, the quantity being imported, the country of origin, and the identity of the foreign supplier or exporter. Because the permit is tied to a specific shipment rather than issued as a standing authorization, procurement and lab-operations staff sourcing controlled-substance reference materials, study compounds, or reagents from outside the US need to build the DEA review and approval step into their supplier-onboarding and ordering timeline — it is not something that can be completed after a shipment has already left the foreign supplier, since the substance cannot lawfully clear US entry without an approved permit already in place.

How It Differs From a Full DEA Importer Registration

DEA’s “Importer” registration category is intended for entities whose core business involves bringing controlled substances into the United States on an ongoing, standing basis — for example, a company importing bulk active pharmaceutical ingredients as a continuing commercial activity. That is a distinct registration track from the research/analytical-lab pathway Form 357 provides: a research registrant filing Form 357 is not becoming an importer in DEA’s registration sense, it is obtaining a one-time authorization tied to its existing, narrower registration. Labs that find themselves needing repeated, frequent controlled-substance imports as a matter of routine operations should evaluate with their DEA registration counsel whether a standing Importer registration is now the more appropriate path, rather than filing Form 357 shipment by shipment indefinitely.

Examples

• A university chemistry department registered with DEA as a Schedule I researcher needs a small quantity of a Schedule I reference standard from a supplier in the United Kingdom for an analytical method-validation study. Before the shipment can clear US entry, the department’s authorized official files DEA Form 357 identifying the substance, quantity, and UK supplier.
• A hospital toxicology laboratory, registered with DEA as an analytical lab, needs a certified reference material containing a Schedule II controlled substance from a European standards manufacturer for instrument calibration. Rather than pursuing a full Importer registration for what is a one-off acquisition, the lab files a DEA import permit application (Form 357) for that specific shipment.

Counter-Example

A pharmaceutical manufacturer that imports bulk controlled-substance active pharmaceutical ingredient as an ongoing, recurring part of its commercial manufacturing operation is the kind of entity DEA’s Importer registration category exists for, and its imports are handled under that broader, standing registration rather than through the occasional-use Form 357 pathway described here. Likewise, moving a controlled substance out of the United States is an export, governed by the same Part 1312 framework but handled through a separate export declaration process — not interchangeable with Form 357, which covers only substances entering the country.

Frequently Asked Questions

Is a DEA import permit the same thing as a DEA registration?

No. A DEA registration (the Certificate of Registration under DEA Form 225 and its schedule-specific variants) is what authorizes a lab or researcher to possess and handle a controlled substance at all. A DEA import permit — the approval that results from a Form 357 application — is a separate, shipment-specific authorization to bring a quantity of that already-authorized substance across the US border. A lab needs the underlying registration first; Form 357 does not substitute for it.

Does every foreign purchase of a controlled substance require Form 357?

Any acquisition of a controlled substance from a source outside the United States is a regulated import under 21 CFR Part 1312, and DEA registrants who are not separately registered as Importers use Form 357 as the application route to obtain the necessary permit. Labs unsure whether a specific planned acquisition needs a DEA import permit should confirm directly with DEA’s Diversion Control Division or their institution’s export-control/regulatory-affairs office before placing the order, given the lead time an approval can require.

Who in a lab or research office typically handles this filing?

In practice this falls to whichever role manages the lab’s DEA registration and controlled-substance compliance — often the same person or office responsible for vendor qualification and controlled-substance procurement more broadly — working with the institution’s export-control office where one exists, since a controlled-substance import can also intersect with separate export-control classification questions.

Related Terms

• Vendor Qualification Process — the broader supplier-vetting discipline a foreign controlled-substance supplier still needs to pass.
• Certificate of Analysis (COA) — documentation commonly required alongside an imported reference standard or reagent.
• Chemical Grades Explained — relevant when the imported controlled substance is itself a reference-grade reagent or standard.
• What Are Dual-Use Items? EU and US Export Control Definitions — a related but distinct cross-border compliance regime that can apply alongside DEA import requirements.

This entry describes the general regulatory mechanism as documented by DEA’s Diversion Control Division and 21 CFR Part 1312. It is not legal advice; labs should confirm current form requirements, processing expectations, and any fee schedule directly with DEA or their institution’s regulatory-affairs office before filing.