FDA product code · Neurology · Class 2
GWL: Amplifier, Physiological Signal
GWL is FDA's product code for "Amplifier, Physiological Signal": a Class 2 device classified under 21 CFR 882.1835, reviewed by the Neurology panel.
510(k) review time for GWL
Across 12 510(k) clearances under GWL decided from 2018-01-01 to 2026-10-06, the median was 183 days from FDA receipt to decision. Half took between 124 and 191 days, and 80% were decided within 192 days. These are past clearances, not a forecast for a new submission.
| Fastest | 30 |
|---|---|
| 25th percentile | 124 |
| Median | 183 |
| 75th percentile | 191 |
| 80th percentile | 192 |
| 90th percentile | 236 |
| Slowest | 265 |
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.
GWL in the public FDA record
| 510(k) clearances, all years | 53 |
|---|
Counts of records, not of devices or events. Adverse event reports for GWL 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 GWL
No FDA recognized consensus standard cites GWL 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.