Cleared Traditional

CYTOCLONE A & B EIA (K911958) - FDA 510(k) Clearance

Class I Microbiology device.

K911958 · Cambridge Biotech Corp. · Microbiology device
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Jul 1991
Decision
88d
Days
Class 1
Risk

K911958 is an FDA 510(k) clearance for the CYTOCLONE A & B EIA. Classified as Reagents, Clostridium Difficile Toxin (product code LLH), Class I - General Controls.

Submitted by Cambridge Biotech Corp. (Worcester, US). The FDA issued a Cleared decision on July 30, 1991 after a review of 88 days - a notably fast clearance cycle.

This device falls under the Microbiology FDA review panel, regulated under 21 CFR 866.2660 - the FDA microbiology 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.

View all Cambridge Biotech Corp. devices

Submission Details

510(k) Number K911958 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 03, 1991
Decision Date July 30, 1991
Days to Decision 88 days
Submission Type Traditional
Review Panel Microbiology (MI)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
14d faster than avg
Panel avg: 102d · This submission: 88d
Pathway characteristics
Predicate-based equivalence.

Device Classification

Product Code LLH Reagents, Clostridium Difficile Toxin
Device Class Class 1 - General Controls
CFR Regulation 21 CFR 866.2660
What this classification means

Class I devices are subject to general controls only and most are exempt from 510(k) premarket notification. They represent the lowest regulatory burden in the FDA device framework.

Regulatory Peers - LLH Reagents, Clostridium Difficile Toxin

All 41
Devices cleared under the same product code (LLH) and FDA review panel - the closest regulatory comparables to K911958.
SensiTox C. difficile Toxin Test
K193490 · First Light Diagnostics, Inc. · Jul 2021
VIDAS C. DIFICILE TOXIN A & B (CDAB) ASSAY
K080931 · bioMerieux, Inc. · Jun 2008
VIDAS C. DIFFICILE TOXIN A&B (CDAB) ASSAY, MODEL: 30 118
K072138 · bioMerieux, Inc. · Dec 2007
COLORPAC TOXIN A
K980185 · Bd Becton Dickinson Vacutainer Systems Preanalytic · Jul 1998
CULTURETTE BRAND TOXIN CD TEST
K925329 · Bd Becton Dickinson Vacutainer Systems Preanalytic · Mar 1993