510(k) · Cleared
Recalled · Class II · 2018Dimension Loci Free Thyroxine Flex Reagent Cartridge, FT4L, Dimension Loci Thyroid Stimulating Hormone Flex Reagent Cart
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Siemens Healthcare Diagnostics, Inc. · CEC Radioimmunoassay, Free Thyroxine
Cleared on Nov 26, 2014 as substantially equivalent to K130276 (Siemens Healthcare Diagnostics, Inc., 2013) and 1 other predicate after a 238-day review. Its family tree reaches back 4 generations to 1997. It has been recalled 2 times.
- Decided
- Nov 26, 2014
- Review
- 238 days
- Class
- Class II
- Product code
- CEC
- Recalls
- 2
- Predicates
- 2
Its longest line of descent runs back 4 generations to K970389 (1997). 6 ancestors in all. No later device cites it as a predicate yet.
- Root · 4 generations backK970389 Thyroid CalibratorDade Chemistry Systems, Inc. · 1997
- 3 generations backK053531 Dimension Vista Free Thyroxine Flex Reagent Cartridge and Loci 1…Dade Behring, Inc. · 2006
- 2 generations backK073604 Dimension Exl with LM Clinical Chemistry System, Dimension FT4L Flex…Dade Behring, Inc. · 2008 · Recalled
- 1 generation backK130276 Dimension Exl with LM SystemSiemens Healthcare Diagnostics, Inc. · 2013 · Recalled
- This deviceK140842 Dimension Loci Free Thyroxine Flex Reagent Cartridge, FT4L…Siemens Healthcare Diagnostics, Inc. · 2014
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −4 | K970389 | Thyroid Calibrator | Dade Chemistry Systems, Inc. | 1997 | — |
| −3 | K053531 | Dimension Vista Free Thyroxine Flex Reagent Cartridge and Loci 1 Calibrator | Dade Behring, Inc. | 2006 | — |
| −2 | K073604 | Dimension Exl with LM Clinical Chemistry System, Dimension FT4L Flex Reagent… | Dade Behring, Inc. | 2008 | 7 |
| −1 | K130276 | Dimension Exl with LM System | Siemens Healthcare Diagnostics, Inc. | 2013 | 6 |
| 0 (this device) | K140842 | Dimension Loci Free Thyroxine Flex Reagent Cartridge, FT4L, Dimension Loci… | Siemens Healthcare Diagnostics, Inc. | 2014 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2006 | 1 | 0 |
| 2008 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in CEC? 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 CEC device
- #1 K240273 Access Free T4score 7.0 · 1 generation · no Class I recall
- #2 Held for the reportin the report
What was it cleared against? (2)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K130276 | Dimension Exl with LM SystemSummary page 6…TSHL Subject Device Same (As above) Same (As above) Predicate 510(k) K130276 K081074 5. Substantial Equivalence Information The following table demonstrates… | 2013 |
| * | K081074 | Dimension TSHL Flex Reagent Cartridge and TSH Sample Diluent with Models RF 612 and KD691Summary page 6…Subject Device Same (As above) Same (As above) Predicate 510(k) K130276 K081074 5. Substantial Equivalence Information The following table demonstrates substantial equivalence between the pred… | 2008 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Jan 2, 2018 | Class II | Z-1668-2018 | Error in labeling | The concentrations for biotin listed in the non-interfering substances section of the instructions for use for the Dimension TSHL, Dimension LOCI FT4L, Dimension Vista TSH, ADVIA Centaur Cyclosporine, and ADVIA Centaur DHEAS, incorrectly… |
| Jan 2, 2018 | Class II | Z-1669-2018 | Error in labeling | The concentrations for biotin listed in the non-interfering substances section of the instructions for use for the Dimension TSHL, Dimension LOCI FT4L, Dimension Vista TSH, ADVIA Centaur Cyclosporine, and ADVIA Centaur DHEAS, incorrectly… |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 17 years and passes through 3 companies; a new generation was cleared every 5.0 years on median.
- 4 of the 6 ancestors have a recall of any class.
How does its category compare?
All CEC devicesCEC Radioimmunoassay, Free Thyroxine: FDA decisions, review times, recalls and adverse event reports over 20 years. 2014, this device’s year, is highlighted.
FDA decisions per year · CEC
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · CEC
238in 2014
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · CEC
1in 2018
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · CEC
213in 2025
MAUDE reports naming product code CEC, 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 | 1 | — | 0 | 0 |
| 2008 | 2 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 2 |
| 2010 | 0 | — | 3 | 7 |
| 2011 | 0 | — | 0 | 15 |
| 2012 | 1 | — | 0 | 6 |
| 2013 | 2 | — | 1 | 6 |
| 2014 | 3 | 238 | 0 | 40 |
| 2015 | 1 | — | 0 | 166 |
| 2016 | 1 | — | 0 | 148 |
| 2017 | 1 | — | 0 | 196 |
| 2018 | 2 | — | 1 | 199 |
| 2019 | 0 | — | 0 | 167 |
| 2020 | 0 | — | 0 | 106 |
| 2021 | 0 | — | 0 | 96 |
| 2022 | 0 | — | 0 | 81 |
| 2023 | 1 | — | 0 | 99 |
| 2024 | 1 | — | 0 | 276 |
| 2025 | 0 | — | 0 | 213 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The FT4L method is an in vitro diagnostic test for the quantitative measurement of Free Thyroxine in human serum and
plasma on the Dimension® EXL™ integrated chemistry system with LOCI® Module. Measurements of free thyroxine
are used in the diagnosis and monitoring of thyroid disease.
The TSHL method is an in vitro diagnostic test for the quantitative measurement of Thyroid Stimulating Hormone (TSH,
thyrotropin) in human serum and plasma on the Dimension® EXL™ integrated chemistry system with LOCI® Module.
Measurements of TSH are used in the diagnosis and monitoring of thyroid disease.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K140842 · printed Nov 6, 2026
Cite this page
510(k) Report. “K140842: Dimension Loci Free Thyroxine Flex Reagent Cartridge, FT4L, Dimension Loci Thyroid Stimulating Hormone Flex Reagent Cart.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K140842
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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