Cleared Traditional

K770677 - T-3 RIA REAGENT SET

K770677 is an FDA 510(k) clearance for T-3 RIA REAGENT SET, manufactured by G.D. Searle and Co.. The device is a Class 2 Immunology device with product code CDP cleared through the Traditional 510(k) pathway after a 39-day FDA review.

K770677 · G.D. Searle and Co. · Immunology device
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May 1977
Decision
39d
Days
Class 2
Risk

K770677 is an FDA 510(k) clearance for the T-3 RIA REAGENT SET. Classified as Radioimmunoassay, Total Triiodothyronine (product code CDP), Class II - Special Controls.

Submitted by G.D. Searle and Co. (Mchenry, US). The FDA issued a Cleared decision on May 20, 1977 after a review of 39 days - a notably fast clearance cycle.

This device falls under the Immunology FDA review panel, regulated under 21 CFR 862.1710 - 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 G.D. Searle and Co. devices

FDA 510(k) Submission Details - K770677

510(k) Number K770677 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 11, 1977
Decision Date May 20, 1977
Days to Decision 39 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
65d faster than avg
Panel avg: 104d · This submission: 39d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

CDP Device Classification - Class 2, Special Controls

Product Code CDP Radioimmunoassay, Total Triiodothyronine
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 862.1710
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 - CDP Radioimmunoassay, Total Triiodothyronine

All 100
Devices cleared under the same product code (CDP) and FDA review panel - the closest regulatory comparables to K770677.
SERUM SET, THYROID CONTROL
K770739 · G.D. Searle and Co. · Jun 1977
QUANTIMUNE T-3 RIA
K770648 · Bio-Rad · Jun 1977
RADIOIMMUNOASSAY, QUANTITIPE 125-I-T3
K770520 · Kallestad Laboratories, Inc. · Jun 1977
T3 RIA (PEG) DIAGNOSTIC KIT
K770201 · Abbott Laboratories · Apr 1977
CENTRIA T3 RIA
K761305 · Union Carbide Corp. · Dec 1976
TEST, RIA, TRIODOTHYRONINE
K760057 · Smithkline Diagnostics, Inc. · Sep 1976