Cleared Traditional

K841504 - QUICK-COUNT PLUS 2

K841504 is the FDA 510(k) clearance for QUICK-COUNT PLUS 2 by Seragen Diagnostics, Inc.. It is a Class 2 Hematology device (product code GKL) cleared through the Traditional 510(k) pathway after a 62-day FDA review.

K841504 · Seragen Diagnostics, Inc. · Hematology device
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Jun 1984
Decision
62d
Days
Class 2
Risk

K841504 is an FDA 510(k) clearance for the QUICK-COUNT PLUS 2. Classified as Counter, Cell, Automated (particle Counter) (product code GKL), Class II - Special Controls.

Submitted by Seragen Diagnostics, Inc. (Mchenry, US). The FDA issued a Cleared decision on June 11, 1984 after a review of 62 days - a notably fast clearance cycle.

This device falls under the Hematology FDA review panel, regulated under 21 CFR 864.5200 - 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 Seragen Diagnostics, Inc. devices

Submission Details

510(k) Number K841504 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 10, 1984
Decision Date June 11, 1984
Days to Decision 62 days
Submission Type Traditional
Review Panel Hematology (HE)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
51d faster than avg
Panel avg: 113d · This submission: 62d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code GKL Counter, Cell, Automated (particle Counter)
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 864.5200
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 Hematology devices follow this clearance model.

Regulatory Peers - GKL Counter, Cell, Automated (particle Counter)

All 69
Devices cleared under the same product code (GKL) and FDA review panel - the closest regulatory comparables to K841504.
COULTER COUNTER MODEL M4
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COULTER COUNTER MODEL ZM
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COULTER AUTOMATIC SAMPLE HANDLER
K842346 · Coulter Electronics, Inc. · Jul 1984
QBC CENTRIFUGAL HEMATOLOGY ANALYZ
K840658 · Bd Becton Dickinson Vacutainer Systems Preanalytic · Apr 1984
COULTER COUNTER M2
K834568 · Coulter Electronics, Inc. · Feb 1984
RDW PARAMETER FOR THE TECHNICON H6000
K834026 · Technicon Instruments Corp. · Jan 1984