510(k) · Cleared
ClearedN-Assay L T-Bil
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Crestat Diagnostics, Inc. · CIG Diazo Colorimetry, Bilirubin
Cleared on Apr 27, 1998 as substantially equivalent to K970985 (Wako Chemicals USA, Inc., 1997) after a 19-day review. Its family tree reaches back 2 generations to 1991.
- Decided
- Apr 27, 1998
- Review
- 19 days
- Class
- Class II
- Product code
- CIG
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 2 generations to K912024 (1991). No later device cites it as a predicate yet.
View FIG. 1 as a table
Line of descent and top descendants
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 CIG? 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 CIG device
- #1 K251998 Atellica CH Diazo Total Bilirubin (D_TBil)score 11.8 · 4 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
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 |
|---|---|---|---|
| * | K970985 | Wako Total Bilirubin VSummary page 2…fety and effectiveness of the liquid Crestat N-ASSAY L T-BIL Reagent is demonstrated by its substantial equivalence to the WAKO Chemicals Total Bilirubin liquid reagent (K970985) which is also based on chemical oxidation. Both test systems are intended to quantitatively measure Total Bilirubin in human ser… | 1997 |
What descends from it?
No later submission names this one as a predicate yet.
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?
- The line of descent spans 7 years and passes through 2 companies; a new generation was cleared every 5.8 years on median.
- None of the 2 ancestors has a recall.
- 2 other devices also cite its predicate K970985.
How does its category compare?
All CIG devicesCIG Diazo Colorimetry, Bilirubin: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · CIG
2in 2023
2026 to Oct 25, outlined.
Median 510(k) review, days · CIG
64in 2013
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · CIG
1in 2019
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · CIG
52in 2025
MAUDE reports naming product code CIG, 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 | 2 |
| 2008 | 3 | 199 | 0 | 8 |
| 2009 | 2 | — | 3 | 3 |
| 2010 | 1 | — | 0 | 6 |
| 2011 | 2 | — | 0 | 38 |
| 2012 | 0 | — | 0 | 14 |
| 2013 | 5 | 64 | 3 | 8 |
| 2014 | 0 | — | 0 | 3 |
| 2015 | 1 | — | 0 | 7 |
| 2016 | 0 | — | 0 | 4 |
| 2017 | 1 | — | 0 | 11 |
| 2018 | 0 | — | 0 | 23 |
| 2019 | 1 | — | 1 | 25 |
| 2020 | 0 | — | 0 | 31 |
| 2021 | 0 | — | 0 | 22 |
| 2022 | 1 | — | 0 | 26 |
| 2023 | 2 | — | 0 | 34 |
| 2024 | 0 | — | 0 | 39 |
| 2025 | 0 | — | 0 | 52 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
The intended use for the N-ASSAY L T-BIL Reagent is for the quantitative determination of serum Total Bilirubin in the diagnosis and treatment of various liver diseases. For in vitro diagnostic use only.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K981289 · printed Nov 4, 2026
Cite this page
510(k) Report. “K981289: N-Assay L T-Bil.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K981289
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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