Cleared Traditional

DELFIA THYROXINE (T4) KIT (K883559) - FDA 510(k) Clearance

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

K883559 · Pharmacia, Inc. · Chemistry device
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Dec 1988
Decision
117d
Days
Class 2
Risk

K883559 is an FDA 510(k) clearance for the DELFIA THYROXINE (T4) KIT. Classified as Radioimmunoassay, Total Thyroxine (product code CDX), Class II - Special Controls.

Submitted by Pharmacia, Inc. (Piscataway, US). The FDA issued a Cleared decision on December 14, 1988 after a review of 117 days - within the typical 510(k) review window.

This device falls under the Chemistry FDA review panel, regulated under 21 CFR 862.1700 - the FDA in vitro diagnostics and chemistry 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 Chemistry review framework, consistent with the majority of Class II 510(k) submissions.

View all Pharmacia, Inc. devices

Submission Details

510(k) Number K883559 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received August 19, 1988
Decision Date December 14, 1988
Days to Decision 117 days
Submission Type Traditional
Review Panel Chemistry (CH)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
29d slower than avg
Panel avg: 88d · This submission: 117d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code CDX Radioimmunoassay, Total Thyroxine
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 862.1700
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 Chemistry devices follow this clearance model.

Regulatory Peers - CDX Radioimmunoassay, Total Thyroxine

All 120
Devices cleared under the same product code (CDX) and FDA review panel - the closest regulatory comparables to K883559.
ELECSYS T4 ASSAY
K961490 · Boehringer Mannheim Corp. · Jun 1996
AXSYM(TM) TOTAL T4
K934384 · Abbott Laboratories · Jun 1994
ABBOTT IMX T4
K925110 · Abbott Laboratories · Jan 1993
ABBOTT TDX/TDXFLX TT4
K925109 · Abbott Laboratories · Jan 1993
MILENIA TOTAL T4, CATALOG: MKT41,5
K912541 · Diagnostic Products Corp. · Aug 1991
THYROXINE MONOCLONAL ANTIBODY SOLID PHASE RADIOIMM
K904816 · Bd Becton Dickinson Vacutainer Systems Preanalytic · Jan 1991