Tool · 510(k)

510(k) Predicate Finder

Find potential predicate devices for your 510(k) submission. Enter a K-number to find all clearances with the same product code, a three-letter product code to browse clearances directly, or search by device name.

Product Code: GKZ FDA class 2

Counter, Differential Cell

Hematology

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The Differential Cell Counter is a laboratory instrument used in hematology to identify and quantify the different types of white blood cells present in a blood sample, supporting the diagnosis of infections, blood disorders, and other conditions. It is classified as FDA Class 2 (moderate risk), meaning it is subject to general controls and requires a 510(k) premarket notification before it can be marketed. The product code is GKZ and it falls under regulation 21 CFR 864.5220 within the Hematology medical specialty.

510(k) Clearances

50+ matches
K Number
Device Name
Sysmex XR-Series (XR-20) Automated Hematology Analyzer
Sysmex XR-Series (XR-10) Automated Hematology Analyzer
Alinity h-series System
Cito CBC System
UniCel DxH 900 Coulter Cellular Analysis System; UniCel DxH Slidemaker Stainer II Coulter Cellular Analysis System; UniCel DxH 690T Coulter Cellular Analysis System
Yumizen H2500
HemoScreen Hematology Analyzer
Sysmex XQ-Series (XQ-320) Automated Hematology Analyzer
QScout Lab; QScout RLD
HemoScreen Hematology Analyzer
Alinity h-series System
Sysmex XW-100 Automated Hematology Analyzer
Sight OLO
Athelas Home
Unicel DxH 800 Coulter Cellular Analysis System
Sight OLO
Cytomics FC 500 Series (MPL or MCL) Flow Cytometer
CELL-DYN Emerald 22 AL System
DxH 520 Hematology Instrument
Sysmex XN-L Automated Hematology Analyzer
Athelas One
HemoScreen Hematology Analyzer
cobas m 511 integrated hematology analyzer
XW-100 Automated Hematology Analyzer for CLIA Waived Use
ABX MICROS ES 60 OT and ABX MICROS ES 60 CT
ADVIA 2120i, ADVIA 2120
Dextramer CMV Kit
Sysmex XN-L Automated Hematology Analyzer
UniCel DxH SlideMaker Stainer Coulter Cellular Analysis System
BC-5390 Auto Hematology Analyzer
PENTRA XLR
XW-100 Automated Hematology Analyzer, XW QC CHECK
BC-3600 Auto Hematology Analyzer
ABX MICROS ES 60 CT; (OPEN TUBE MODEL), (CLOSE TUBE MODEL)
SYSMEX XN SERIES
UNICEL DXH 800 COULTER CELLULAR ANALYSIS SYSTEM/ UNICEL DXH SLIDEMAKER STAINER COULTER CELLULAR ANALYSIS SYSTEM
UNICEL DXH 800 COULTER CELLULAR ANALYSIS SYSTEM
SYSMEX XN-SERIES
ABACUS 3CP
ABACUS 5
CELL-DYN EMERALD 22 SYSTEM
ADVIA 2120 WITH AUTOSLIDE SYSTEM, AND ADVIA 2120I
BD FACS SAMPLE PREP ASSISTANT III (SPA III)
DXH 300 COULTER CELLULAR ANALYSIS SYSTEM, DXH 300C COULTER CELLULAR ANALYSSI SYSTEM MODEL: 71772, 71771
ADVIA 2120/2120I BODY FLUIDS
BC-3200 AUTO HEMATOLOGY ANALYZER,M-30D DILUENT, M-30R RINSE, M-30CFL LYSE, M-30E-Z CLEANSER, M-30PROBE CLEANSER, BC-3D C
SYSMEX MODEL XT-4000I
THERMO SCIENTIFIC CYTO-CAL COUNT TUBES
BD MULTITEST 6-COLOR TBNK REAGENT, MODEL 644611
CHEMPAQ XBC ANALYZER

What is a Predicate Device?

A predicate device is a legally marketed device that a new 510(k) applicant uses to demonstrate substantial equivalence. The FDA's 510(k) pathway requires manufacturers to show that their device has the same intended use and similar technological characteristics as one or more predicate devices already cleared for commercial distribution.

Finding the right predicate is a critical step in 510(k) strategy. Manufacturers typically search for cleared devices with the same FDA product code, which groups devices by their intended use and regulatory classification. This tool helps you identify potential predicates by browsing all clearances within a product code.

Note that predicate devices must be legally marketed — they cannot be devices that were cleared but never commercialized, or devices subject to a mandatory recall. The determination of substantial equivalence considers intended use, technological characteristics, and performance data.

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