510(k) Report

FDA product code · Hematology

Counter, Cell, Automated (Particle Counter)

GKLClass II21 CFR 864.5200510(k) required130 decisions since 19768 recalls

130 FDA decisions since 1976. 8 recalls name this code, 0 of them Class I. The most-cited predicate is K962988, named by 3 later devices.

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026 Download the data (CSV)

FIG. A — Illustration, hematology panel

Twenty years of GKL at a glance: how often FDA decides these devices, how long 510(k) reviews take, how often they are recalled, and how many adverse event reports name the code.

FDA decisions per year · GKL

1in 2016

2007: 12010: 12016: 1
2007high 1 (2007) · low 0 (2008)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · GKL

Too few GKL 510(k)s in any year since 2007 to give a median.

Recalls per year · GKL

1in 2018

2007: 12011: 12014: 12018: 1
2007high 1 (2007) · low 0 (2008)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · GKL

1in 2025

2007: 252008: 42009: 12011: 312012: 142013: 112016: 12017: 12018: 22020: 132021: 112022: 72023: 12025: 1
2007high 31 (2011) · low 0 (2010)2025

MAUDE reports naming product code GKL, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20071—125
20080—04
20090—01
20101—00
20110—131
20120—014
20130—011
20140—10
20150—00
20161—01
20170—01
20180—12
20190—00
20200—013
20210—011
20220—07
20230—01
20240—00
20250—01
20260—0—
FIG. 1 — GKL by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in GKL? A 510(k) Report ranks candidate predicates in this code by lineage, citations and recall history, with the review-time outlook.

See the 510(k) Report

Related product codes

Other codes under 21 CFR 864.5200.