510(k) · Cleared

Cleared

Ciba Corning Acs T Uptake Immunoassay

K925257510(k) TraditionalCleared Dec 28, 199270-day reviewClass II21 CFR 862.1715

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

Ciba Corning Diagnostics Corp. · KHQ Radioassay, Triiodothyronine Uptake

Cleared on Dec 28, 1992 after a 70-day review. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known. 1 later device descends from it.

Decided: Dec 28, 1992
Review: 70 days
Class: Class II
Product code: KHQ
Recalls: None
Predicates: 0

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

This deviceK925257 Ciba Corning Acs T Uptake ImmunoassayCiba Corning Diagnostics Corp. · 1992
Descendant · cites it directly · 0 of its ownK970539 Chiron Diagnostics Acs:180TU PChiron Diagnostics Corp. · 1997

Most influential descendants

Showing 1 of 1 · See all

K970539Chiron Diagnostics Acs:180TU PChiron Diagnostics Corp. · 1997 · cites it directly0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
0 (this device)	K925257	Ciba Corning Acs T Uptake Immunoassay	Ciba Corning Diagnostics Corp.	1992	—
+1	K970539	Chiron Diagnostics Acs:180TU P	Chiron Diagnostics Corp.	1997	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
1997	1	0

FIG. 1 — Lineage of K925257, 1992–1997Source: 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 KHQ? 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 lists a 510(k) statement for it but has not posted the file, 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
K970539	Chiron Diagnostics Acs:180TU P	Chiron Diagnostics Corp.	1997	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, K970539 (Chiron Diagnostics Corp., 1997) has gone furthest, with 0 descendants of its own.

How does its category compare?

All KHQ devices

KHQ Radioassay, Triiodothyronine Uptake: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · KHQ

FDA has decided no KHQ device since 2007.

Median 510(k) review, days · KHQ

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

Recalls per year · KHQ

No recall names KHQ since 2007.

Adverse event reports per year · KHQ

1in 2021

2007high 1 (2011) · low 0 (2007)2025

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

View these four charts as a table

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

https://510kreport.com/device/K925257 · printed Nov 4, 2026

Cite this page

510(k) Report. “K925257: Ciba Corning Acs T Uptake Immunoassay.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K925257

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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