510(k) Report

FDA product code · Hematology

Spinner, Slide, Automated

GKJClass I21 CFR 864.5850510(k) exempt6 decisions since 19761 recall

FDA lists GKJ as exempt from 510(k): a device of this type needs no clearance unless one of the limits in 21 CFR 864.9 applies, such as a new intended use or a different fundamental technology. 6 FDA decisions since 1976. 1 recall names this code; it is not Class I.

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 GKJ 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 · GKJ

FDA has decided no GKJ device since 2007.

Median 510(k) review, days · GKJ

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

Recalls per year · GKJ

No recall names GKJ since 2007.

Adverse event reports per year · GKJ

1in 2019

2008: 12009: 22010: 32011: 232012: 662013: 52015: 12016: 12018: 12019: 1
2007high 66 (2012) · low 0 (2007)2025

MAUDE reports naming product code GKJ, 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
20070—00
20080—01
20090—02
20100—03
20110—023
20120—066
20130—05
20140—00
20150—01
20160—01
20170—00
20180—01
20190—01
20200—00
20210—00
20220—00
20230—00
20240—00
20250—00
20260—0—
FIG. 1 — GKJ by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in GKJ? 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