Cleared Traditional

K933971 - N-ASSAY TIA IGA

K933971 is the FDA 510(k) clearance for N-ASSAY TIA IGA by Crestat Diagnostics, Inc.. It is a Class 2 Immunology device (product code CFN) cleared through the Traditional 510(k) pathway after a 221-day FDA review.

K933971 · Crestat Diagnostics, Inc. · Immunology device
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Mar 1994
Decision
221d
Days
Class 2
Risk

K933971 is an FDA 510(k) clearance for the N-ASSAY TIA IGA. Classified as Method, Nephelometric, Immunoglobulins (g, A, M) (product code CFN), Class II - Special Controls.

Submitted by Crestat Diagnostics, Inc. (Thousand Oaks, US). The FDA issued a Cleared decision on March 22, 1994 after a review of 221 days - an extended review cycle.

This device falls under the Immunology FDA review panel, regulated under 21 CFR 866.5510 - 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: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Immunology review framework, consistent with the majority of Class II 510(k) submissions.

View all Crestat Diagnostics, Inc. devices

Submission Details

510(k) Number K933971 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received August 13, 1993
Decision Date March 22, 1994
Days to Decision 221 days
Submission Type Traditional
Review Panel Immunology (IM)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
117d slower than avg
Panel avg: 104d · This submission: 221d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code CFN Method, Nephelometric, Immunoglobulins (g, A, M)
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 866.5510
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 - CFN Method, Nephelometric, Immunoglobulins (g, A, M)

All 52
Devices cleared under the same product code (CFN) and FDA review panel - the closest regulatory comparables to K933971.
IGG AND IGG SUBCLASS NEPHELOMETRIC DIAGNOSTIC TEST KITS
K982100 · The Binding Site, Ltd. · Dec 1999
HUMAN IGA SUBCLASS BNII COMBI KIT
K981912 · The Binding Site, Ltd. · Dec 1998
COBAS INTEGRA REAGENT CASSETTES
K982382 · Roche Diagnostic Systems, Inc. · Sep 1998
WAKO IGG-HA
K923070 · Wako Chemicals USA, Inc. · Aug 1992
N PROTEIN STANDARD PLASMA (HUMAN)
K880356 · Behring Diagnostics, Inc. · Apr 1988
QM2/QM300 BUFFER AND DILUENT PACK
K871343 · Kallestad Diag, A Div. of Erbamont, Inc. · May 1987