FDA product code · Neurology · Class 2
GWF: Stimulator, Electrical, Evoked Response
GWF is FDA's product code for "Stimulator, Electrical, Evoked Response": a Class 2 device classified under 21 CFR 882.1870, reviewed by the Neurology panel.
510(k) review time for GWF
Across 16 510(k) clearances under GWF decided from 2018-01-01 to 2026-10-06, the median was 120 days from FDA receipt to decision. Half took between 74 and 191 days, and 80% were decided within 218 days. These are past clearances, not a forecast for a new submission.
| Fastest | 27 |
|---|---|
| 25th percentile | 74 |
| Median | 120 |
| 75th percentile | 191 |
| 80th percentile | 218 |
| 90th percentile | 476 |
| Slowest | 796 |
Source: openFDA 510(k) records, snapshot of 2026-10-06 (openFDA data as of 2026-09-28). Compare 510(k) review times across all device types, see every code side by side in the Clearance Timeline Estimator, or browse the clearances themselves in PredicateScope.
GWF in the public FDA record
| 510(k) clearances, all years | 140 |
|---|---|
| Device recalls | 16 |
| Establishment listings | 268 |
| GUDID device identifiers | 1,703 |
Counts of records, not of devices or events. Adverse event reports for GWF are in MAUDEScope, as counts with the query shown: MAUDE has no denominator, so a report count is not a rate and does not show that a device caused an event.
FDA-recognized standards that cite GWF
No FDA recognized consensus standard cites GWF by product code. Horizontal standards such as biocompatibility, sterilization and software standards can still apply.
Source: FDA Recognized Consensus Standards, snapshot of 2026-09-01. Search them all in the Consensus Standards Lookup.