510(k) · Cleared
Recalled · Class II · 2018Aia-Pack TSH 3RD-Gen Assay
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Tosoh Medics, Inc. · JLW Radioimmunoassay, Thyroid-Stimulating Hormone
Cleared on Aug 29, 1997 after a 49-day review. FDA’s file for it is a 510(k) statement, which names no predicate. 1 later device descends from it. It has been recalled once.
- Decided
- Aug 29, 1997
- Review
- 49 days
- Class
- Class II
- Product code
- JLW
- Recalls
- 1
- Predicates
- 0
1 later device descends from it, 1 citing it directly.
- This deviceK972586 Aia-Pack TSH 3RD-Gen AssayTosoh Medics, Inc. · 1997
- Descendant · cites it directly · 0 of its ownK131928 Frend TSH (Reagent Cartridge)Nanoentek USA, Inc. · 2014
Most influential descendants
Showing 1 of 1 · See all- K131928Frend TSH (Reagent Cartridge)Nanoentek USA, Inc. · 2014 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K972586 | Aia-Pack TSH 3RD-Gen Assay | Tosoh Medics, Inc. | 1997 | — |
| +1 | K131928 | Frend TSH (Reagent Cartridge) | Nanoentek USA, Inc. | 2014 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2014 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA 510(k) statement (indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in JLW? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new JLW device
- #1 K251543 Atellica® IM TSH3-Ultra II (TSH3ULII)score 11.4 · 3 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA’s file for it is a 510(k) statement, which names no predicate.
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K131928 | Frend TSH (Reagent Cartridge) | 2014 | 0 |
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Mar 5, 2018 | Class II | Z-2077-2018 | Device Design | Asfotase Alfa (Strensiq) interferes with certain Tosoh assays which potentially causes falsely increased or falsely decreased immunoassay test results, depending upon the assay. |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K131928 (Nanoentek USA, Inc., 2014) has gone furthest, with 0 descendants of its own.
How does its category compare?
All JLW devicesJLW Radioimmunoassay, Thyroid-Stimulating Hormone: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · JLW
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · JLW
194in 2017
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · JLW
2in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · JLW
103in 2025
MAUDE reports naming product code JLW, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 0 | — | 1 | 19 |
| 2008 | 5 | 143 | 0 | 10 |
| 2009 | 2 | — | 0 | 41 |
| 2010 | 1 | — | 1 | 34 |
| 2011 | 0 | — | 1 | 167 |
| 2012 | 1 | — | 3 | 144 |
| 2013 | 1 | — | 0 | 168 |
| 2014 | 1 | — | 0 | 155 |
| 2015 | 3 | 142 | 0 | 203 |
| 2016 | 3 | 238 | 1 | 183 |
| 2017 | 4 | 194 | 0 | 235 |
| 2018 | 0 | — | 4 | 249 |
| 2019 | 1 | — | 1 | 216 |
| 2020 | 0 | — | 2 | 145 |
| 2021 | 0 | — | 0 | 146 |
| 2022 | 1 | — | 0 | 137 |
| 2023 | 1 | — | 0 | 162 |
| 2024 | 2 | — | 2 | 169 |
| 2025 | 1 | — | 2 | 103 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
AIA-PACK TSH 3rd-Gen is intended for IN VITRO DIAGNOSTIC USE ONLY for the quantitative measurement of thyroid stimulating hormone (thyrotrophin) in human serum on TOSOH AIA System analyzers. Measurements obtained by this device are used in the diagnosis of thyroid or pituitary disorders.
Indications for use read by OCR from a scanned FDA 510(k) statement, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K972586 · printed Nov 6, 2026
Cite this page
510(k) Report. “K972586: Aia-Pack TSH 3RD-Gen Assay.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K972586
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026