FDA 510(k) Review Timeline
This page summarizes the regulatory timelines for FDA 510(k) premarket notification submissions, based on MDUFA V performance goals and 2025-2026 clearance data.
Official MDUFA V Performance Goals
| Metric | Target |
|---|---|
| FDA decision goal (standard 510(k)) | 90 FDA days |
| Substantive interaction goal | 60 calendar days from Day 0 |
| Refuse-to-Accept (RTA) decision | 15 calendar days |
Important: "FDA days" excludes time when the submission is on hold for Additional Information Requests (AIR). Actual calendar time is substantially longer.
Actual Review Times (2025 Data)
| Metric | Days |
|---|---|
| Average cleared submissions (2025) | 146 days |
| Average cleared - last 2 years (2024-2025) | 149 days |
| All-time average (2000-2025) | 129 days |
| Average denied submissions | 337 days |
| Fastest panel (Toxicology) | 90 days |
| Slowest panel (Immunology) | 227 days |
Total Estimated Timeline (End-to-End)
| Phase | Typical Duration |
|---|---|
| Pre-submission (Q-Sub) meeting | 1-2 months |
| Submission preparation | 2-6 months |
| FDA acceptance review (RTA) | ~15 days |
| Substantive review + AIR cycles | 3-7 months |
| Final decision | Included above |
| Total (submission to clearance) | 5-7 months typical |
Key Timeline Factors
What Extends Review Time
- Additional Information Requests (AIR) — Clock stops during manufacturer response period; multiple AIR cycles are common
- Device complexity — Novel technology or complex indications require more review
- Panel assignment — Some review panels consistently take longer
- Predicate device distance — Greater differences from predicate = more scrutiny
- Clinical data requests — Performance testing or clinical studies add months
What Shortens Review Time
- Q-Sub pre-submission — FDA feedback before submission reduces deficiencies
- Complete initial submission — Reduces AIR likelihood
- Strong predicate argument — Clear substantial equivalence speeds review
- Special 510(k) pathway — Reliance on guidance documents and special controls
510(k) Pathway Variations
| Pathway | Typical Timeline | When to Use |
|---|---|---|
| Traditional 510(k) | 5-7 months | Standard pathway |
| Abbreviated 510(k) | 4-6 months | Reliance on guidance/special controls |
| Special 510(k) | 3-4 months | Modification to own cleared device |
| De Novo | 8-12 months | No predicate, low-moderate risk |
Annual Trends
Review times peaked at ~185 days in 2022 (post-COVID backlog) and have been declining since 2023. The 2025 average of 146 days represents the lowest since 2019, indicating improved FDA processing efficiency.
Last updated: July 2026
Sources: FDA MDUFA V performance goals, 510kdatabase.net clearance data analysis (2025-2026), FDA Annual MDUFA Performance Reports