Cleared Traditional

K850174 - TDX ETHOSUXIMIDE (FDA 510(k) Clearance)

Class II Toxicology device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K850174 · Abbott Laboratories · Toxicology device
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Feb 1985
Decision
20d
Days
Class 2
Risk

K850174 is an FDA 510(k) clearance for the TDX ETHOSUXIMIDE. Classified as Enzyme Immunoassay, Ethosuximide (product code DLF), Class II - Special Controls.

Submitted by Abbott Laboratories (Abbott Park, US). The FDA issued a Cleared decision on February 6, 1985 after a review of 20 days - a notably fast clearance cycle.

This device falls under the Toxicology FDA review panel, regulated under 21 CFR 862.3380 - the FDA toxicology device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

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Submission Details

510(k) Number K850174 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received January 17, 1985
Decision Date February 06, 1985
Days to Decision 20 days
Submission Type Traditional
Review Panel Toxicology (TX)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
67d faster than avg
Panel avg: 87d · This submission: 20d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code DLF Enzyme Immunoassay, Ethosuximide
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 862.3380
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Toxicology devices follow this clearance model.