Cleared Traditional

K843684 - SIGMA SUDAN BLACK REAGENT 380-1 (FDA 510(k) Clearance)

Class I Hematology device.

K843684 · Sigma Chemical Co. · Hematology device
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Oct 1984
Decision
43d
Days
Class 1
Risk

K843684 is an FDA 510(k) clearance for the SIGMA SUDAN BLACK REAGENT 380-1. Classified as Sudan Black B (product code HZZ), Class I - General Controls.

Submitted by Sigma Chemical Co. (St. Louis, US). The FDA issued a Cleared decision on October 31, 1984 after a review of 43 days - a notably fast clearance cycle.

This device falls under the Hematology FDA review panel, regulated under 21 CFR 864.1850 - the FDA hematology 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 Sigma Chemical Co. devices

Submission Details

510(k) Number K843684 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 18, 1984
Decision Date October 31, 1984
Days to Decision 43 days
Submission Type Traditional
Review Panel Hematology (HE)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
70d faster than avg
Panel avg: 113d · This submission: 43d
Pathway characteristics
Predicate-based equivalence.

Device Classification

Product Code HZZ Sudan Black B
Device Class Class 1 - General Controls
CFR Regulation 21 CFR 864.1850
What this classification means

Class I devices are subject to general controls only and most are exempt from 510(k) premarket notification. They represent the lowest regulatory burden in the FDA device framework.