Emergency Use Authorization
FDA authority to permit the use of unapproved medical products, or unapproved uses of approved products, during declared public health emergencies.
Definition
Emergency Use Authorization (EUA) is FDA authority under FD&C Act section 564 to authorize an unapproved medical product or unapproved use of an approved product after an applicable section 564(b) declaration and satisfaction of the statutory criteria. An EUA is not FDA clearance or approval. It remains effective until the applicable section 564 declaration terminates or FDA revokes the authorization; it is not automatically ended by expiration of a PHSA public health emergency. Product-specific conditions govern labeling, information for providers and recipients, reporting, and records.What this means in practice
Plan for the applicable EUA termination and FDA transition policy rather than assuming a universal transition window. As of November 1, 2026, FDA reports that COVID-19 device EUA declarations will terminate December 26, 2026, and the drug and biologic declaration June 29, 2027. Review individual authorizations and transition policies, including any continued-use provisions for already distributed products.Examples
- Illustrative: During a novel respiratory virus pandemic, a diagnostic test manufacturer received an EUA to rapidly distribute its test kit, enabling widespread screening before full marketing authorization could be obtained.
- Illustrative: Following a chemical attack, the FDA issued an EUA for an unapproved therapeutic drug, allowing healthcare providers to administer it to affected individuals when no approved treatments were available.
- Illustrative: A manufacturer of personal protective equipment (PPE) secured an EUA for its N95 respirators, permitting their distribution and use by healthcare workers during a severe public health emergency where standard supply chains were overwhelmed.
- •Treating EUA as approval, labeling, marketing, and reimbursement implications differ significantly from cleared/approved status.
- •Assuming the end of a PHSA emergency automatically ends an EUA, or assuming all products receive the same transition period.
- •Failing to follow adverse-event reporting conditions in the individual EUA, which may differ from ordinary requirements.
Frequently asked questions
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Sources
3 sourcesSources support the definition or relevant regulatory context, not necessarily every claim on this page. Each is graded against our source-tier hierarchy so you can see what rests on binding law versus commentary.
Official-source claim check:
Section 564 authorization is distinct from marketing approval and requires a section 564(b) declaration plus statutory issuance criteria, not merely a PHSA public health emergency.
Partial review: verified corrections are applied, but this is not a full accuracy certification. The last full review date is unchanged.
Remaining verification limits
- Original merged record reviewed in full. Illustrative examples are hypothetical, not verified case histories. Evidence supports the specific propositions below, not an assertion that every linked page verifies all merged content.
- 1Emergency Use AuthorizationTier 2 VerifiedFDAfda.gov
- 2EUA of Medical Products GuidanceTier 2 VerifiedFDAfda.gov
- 3European Commission - Medical DevicesTier 2 VerifiedEuropean Commissionhealth.ec.europa.eu
Inline markers like [1] jump to the matching reference above.