510(k) · Cleared
Recalled · Class II · 2019Rheumatoid Factor Latex-Enhanced Immunoturbidimetric Test Kit
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Randox Laboratories, Ltd. · DHR System, Test, Rheumatoid Factor
Cleared on Sep 9, 1997 after an 89-day review. FDA’s file for it is a 510(k) statement, which names no predicate. It has been recalled once.
- Decided
- Sep 9, 1997
- Review
- 89 days
- Class
- Class II
- Product code
- DHR
- Recalls
- 1
- Predicates
- 0
FDA’s file for it is a 510(k) statement, which names no predicate.
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 DHR? 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
What was it cleared against?
FDA’s file for it is a 510(k) statement, which names no predicate.
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 |
|---|---|---|---|---|
| Aug 9, 2019 | Class II | Z-0282-2020 | Nonconforming Material/Component | The assigned value for Rheumatoid Factor over recovers against the reference material RF serum, 1st British standard from NIBSC. Ref = 64/002. The calibrator values have been adjusted to re-align to the reference material. |
No ancestor or descendant has a Class I recall.
How does its category compare?
All DHR devicesDHR System, Test, Rheumatoid Factor: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · DHR
1in 2020
2026 to Oct 25, outlined.
Median 510(k) review, days · DHR
Too few DHR 510(k)s in any year since 2007 to give a median.
Recalls per year · DHR
1in 2019
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · DHR
2in 2025
MAUDE reports naming product code DHR, 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 | 0 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 1 | — | 1 | 19 |
| 2011 | 1 | — | 3 | 400 |
| 2012 | 0 | — | 2 | 91 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 1 | — | 0 | 0 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 1 | — | 0 | 0 |
| 2018 | 1 | — | 2 | 1 |
| 2019 | 1 | — | 1 | 0 |
| 2020 | 1 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 3 |
| 2025 | 0 | — | 0 | 2 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The Randox Rheumatoid Factor Latex-Enhanced Immunoturbidimetric Test Kit is an invitro diagnostic reagent for the quantitative determination of rheumatoid factors (RF) in human serum. This test kit may be used to facilitate the detection and diagnosis of Rheumatoid Arthritis. RF have also been observed in the serum of patients with systemic lupus erythematosus, hepatitis, liver cirrhosis and syphilis. However, in these conditions the RF titre is much…
Read the full statement (106 words)
The Randox Rheumatoid Factor Latex-Enhanced Immunoturbidimetric Test Kit is an invitro diagnostic reagent for the quantitative determination of rheumatoid factors (RF) in human serum. This test kit may be used to facilitate the detection and diagnosis of Rheumatoid Arthritis. RF have also been observed in the serum of patients with systemic lupus erythematosus, hepatitis, liver cirrhosis and syphilis. However, in these conditions the RF titre is much lower than in rheumatoid arthritis.
This test kit must be used by suitably qualified personnel under appropriate laboratory conditions.
RF calibrator and RF positive control are for use in the calibration and quality control of RF latex-enhanced immunoturbidimetric assays.
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/K972220 · printed Nov 4, 2026
Cite this page
510(k) Report. “K972220: Rheumatoid Factor Latex-Enhanced Immunoturbidimetric Test Kit.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K972220
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Page last updated Nov 3, 2026