Cleared Traditional

K841454 - RF TEST KIT

K841454 is an FDA 510(k) clearance for RF TEST KIT, manufactured by Difco Laboratories, Inc.. The device is a Class 2 Immunology device with product code DHR cleared through the Traditional 510(k) pathway after a 16-day FDA review.

K841454 · Difco Laboratories, Inc. · Immunology device
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Apr 1984
Decision
16d
Days
Class 2
Risk

K841454 is an FDA 510(k) clearance for the RF TEST KIT. Classified as System, Test, Rheumatoid Factor (product code DHR), Class II - Special Controls.

Submitted by Difco Laboratories, Inc. (Mchenry, US). The FDA issued a Cleared decision on April 25, 1984 after a review of 16 days - a notably fast clearance cycle.

This device falls under the Immunology FDA review panel, regulated under 21 CFR 866.5775 - the FDA immunology 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 Difco Laboratories, Inc. devices

FDA 510(k) Submission Details - K841454

510(k) Number K841454 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 09, 1984
Decision Date April 25, 1984
Days to Decision 16 days
Submission Type Traditional
Review Panel Immunology (IM)
Summary -
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
89d faster than avg
Panel avg: 105d · This submission: 16d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

DHR Device Classification - Class 2, Special Controls

Product Code DHR System, Test, Rheumatoid Factor
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 866.5775
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 Immunology devices follow this clearance model.

Regulatory Peers - DHR System, Test, Rheumatoid Factor

All 111
Devices cleared under the same product code (DHR) and FDA review panel - the closest regulatory comparables to K841454.
LASER RF TEST -RHEUMATOID FACTOR(S) REAGENTS
K850296 · Behring Diagnostics, Inc. · Apr 1985
ABBOTT RF EIA DIAGNOSTIC KIT
K850373 · Abbott Laboratories · Mar 1985
RHEUMADX LATEX AGGLUTINATION RHEUMATOID
K843896 · Diagnostic Products Corp. · Oct 1984
SERATEST RF LATEX DETERMINATION
K840863 · Seragen Diagnostics, Inc. · Apr 1984
SOPHEIA MP IGM RHEUMATOID FACTOR EIA
K840049 · Diagnostic Products Corp. · Feb 1984
SERO/TEX RED CELL RF TEST
K831597 · Texas Immunology, Inc. · Jun 1983