Cleared Traditional

ALLEGRO TM HS-TSH IMMUNOASSAY SYSTEM (K853717) - FDA 510(k) Clearance

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

K853717 · Nichols Institute Diagnostics · Chemistry device
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Oct 1985
Decision
27d
Days
Class 2
Risk

K853717 is an FDA 510(k) clearance for the ALLEGRO TM HS-TSH IMMUNOASSAY SYSTEM. Classified as Radioimmunoassay, Thyroid-stimulating Hormone (product code JLW), Class II - Special Controls.

Submitted by Nichols Institute Diagnostics (San Juan Capistrano, US). The FDA issued a Cleared decision on October 2, 1985 after a review of 27 days - a notably fast clearance cycle.

This device falls under the Chemistry FDA review panel, regulated under 21 CFR 862.1690 - 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: 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 Nichols Institute Diagnostics devices

Submission Details

510(k) Number K853717 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 05, 1985
Decision Date October 02, 1985
Days to Decision 27 days
Submission Type Traditional
Review Panel Chemistry (CH)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
61d faster than avg
Panel avg: 88d · This submission: 27d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code JLW Radioimmunoassay, Thyroid-stimulating Hormone
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 862.1690
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 - JLW Radioimmunoassay, Thyroid-stimulating Hormone

All 241
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