510(k) · Cleared

Cleared

Spinchem Acid Phosphatase Reagent

K821674510(k) TraditionalCleared Jun 22, 198215-day reviewClass II21 CFR 862.1020

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

Smithkline Diagnostics, Inc. · CKB Acid Phosphatase, Naphthyl Phosphate

Cleared on Jun 22, 1982 after a 15-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 1 later device descends from it.

Decided: Jun 22, 1982
Review: 15 days
Class: Class II
Product code: CKB
Recalls: None
Predicates: 0

1 later device descends from it, 1 citing it directly.

This deviceK821674 Spinchem Acid Phosphatase ReagentSmithkline Diagnostics, Inc. · 1982
Descendant · cites it directly · 0 of its ownK053612 Dri-Stat Acid Phosphatase ReagentBeckman Coulter, Inc. · 2006

Most influential descendants

Showing 1 of 1 · See all

K053612Dri-Stat Acid Phosphatase ReagentBeckman Coulter, Inc. · 2006 · cites it directly0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
0 (this device)	K821674	Spinchem Acid Phosphatase Reagent	Smithkline Diagnostics, Inc.	1982	—
+1	K053612	Dri-Stat Acid Phosphatase Reagent	Beckman Coulter, Inc.	2006	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
2006	1	0

FIG. 1 — Lineage of K821674, 1982–2006Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in CKB? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

Candidate predicates for a device like this, rankedin the report
Recall history across each candidate’s familyin the report

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What was it cleared against?

FDA has not posted a summary or statement for it, so its predicates are not known.

What descends from it? (1)

1 later device cites it directly; ranked here by how many devices descend from each in turn.

Number	Device	Applicant	Decided	Descendants
K053612	Dri-Stat Acid Phosphatase Reagent	Beckman Coulter, Inc.	2006	0

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

What does this lineage say?

Of its descendants, K053612 (Beckman Coulter, Inc., 2006) has gone furthest, with 0 descendants of its own.

How does its category compare?

All CKB devices

CKB Acid Phosphatase, Naphthyl Phosphate: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · CKB

FDA has decided no CKB device since 2007.

Median 510(k) review, days · CKB

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

Recalls per year · CKB

1in 2013

2007high 1 (2013) · low 0 (2007)2026

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

Adverse event reports per year · CKB

2in 2021

2007high 2 (2011) · low 0 (2007)2025

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

View these four charts as a table

Year	Median 510(k) review, days	Recalls (Class I)	MAUDE reports
2007	—	0	0
2008	—	0	0
2009	—	0	0
2010	—	0	0
2011	—	0	2
2012	—	0	1
2013	—	1	0
2014	—	0	0
2015	—	0	0
2016	—	0	0
2017	—	0	0
2018	—	0	0
2019	—	0	0
2020	—	0	0
2021	—	0	2
2022	—	0	0
2023	—	0	0
2024	—	0	0
2025	—	0	0
2026	—	0	—

https://510kreport.com/device/K821674 · printed Nov 5, 2026

Cite this page

510(k) Report. “K821674: Spinchem Acid Phosphatase Reagent.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K821674

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Record history

FDA decision record loaded May 2, 2026
Lineage and recalls computed Nov 3, 2026
Page last updated Nov 3, 2026