Cleared Traditional

K941994 - BENZODIAZEPINES AND TRICYCLIC ANTIDEPRESSANTS BY HPLC (FDA 510(k) Clearance)

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

K941994 · Bio-Rad · Toxicology device
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Mar 1995
Decision
329d
Days
Class 2
Risk

K941994 is an FDA 510(k) clearance for the BENZODIAZEPINES AND TRICYCLIC ANTIDEPRESSANTS BY HPLC. Classified as High Pressure Liquid Chromatography, Tricyclic Antidepressant Drugs (product code LFI), Class II - Special Controls.

Submitted by Bio-Rad (Hercules, US). The FDA issued a Cleared decision on March 20, 1995 after a review of 329 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Toxicology FDA review panel, regulated under 21 CFR 862.3910 - 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: Standard predicate-based submission. Elevated predicate reliance profile. This clearance follows a standard predicate-based equivalence path within the Toxicology review framework, consistent with the majority of Class II 510(k) submissions.

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Submission Details

510(k) Number K941994 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 25, 1994
Decision Date March 20, 1995
Days to Decision 329 days
Submission Type Traditional
Review Panel Toxicology (TX)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
242d slower than avg
Panel avg: 87d · This submission: 329d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code LFI High Pressure Liquid Chromatography, Tricyclic Antidepressant Drugs
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 862.3910
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.