CLASS II ONGOING Device recall · Reported 27 Aug 2025 · FDA Enforcement Report
Vitros Chemistry Products Ca Slides recalled
Ortho-Clinical Diagnostics is recalling Vitros Chemistry Products Ca Slides, distributed nationwide in the US. The recall was initiated on 9 Jul 2025 and the FDA has classified it as Class II.
Check your package
Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.
Recall details
- Recall number
- Z-2335-2025
- FDA event ID
- 97210
- Recalling firm
- Ortho-Clinical Diagnostics, Rochester, NY
- Classification
- Class II
- Status
- Ongoing
- Recall initiated
- 9 Jul 2025
- FDA classified
- 15 Aug 2025
- Reported
- 27 Aug 2025
- Type
- Voluntary: Firm initiated
- Customers notified by
- Letter
- Reason category
- Device Malfunction
- Device type
- Other Medical Devices
Timeline
| 9 Jul 2025 | Recall initiated by company | |
| 15 Aug 2025 | Classified by FDA | +37 days |
| 27 Aug 2025 | Published in enforcement report | +12 days |
Companies usually start a recall weeks before the FDA classifies and publishes it; the gap above is that lag.
Reason for recall
Generations 67 and above of VITROS Ca Slides are experiencing an increased occurrence of Condition Code TH4-63J during calibration on VITROS XT 3400 and VITROS XT 7600 Systems, causing calibration failures that delay calcium test results and potentially impact patient management. The imaging reflectometer algorithm detects excessive "spikes" (imperfections) in slide images and generates the TH4-63J condition code when the threshold of 600 spikes is exceeded. Updated analysis revealed a 19-fold increase in failure rates from 0.0043% (2024 baseline) to 0.082% for Generation 67+ slides in 2025, with 100% of calibrator failures occurring at the lowest concentration level. This can result in delayed diagnosis and treatment of conditions such as hypercalcemic crisis, parathyroid disorders, and other calcium-related emergencies requiring urgent intervention.
Device recalls are issued when a component, software or design fault could cause the device to fail or give wrong readings. Many are corrections applied in the field rather than physical returns.
Product as listed by the FDA
VITROS Chemistry Products Ca Slides; Catalog Number: 145 0261;
Where it was distributed
Worldwide distribution - US Nationwide and the countries of Australia, Belgium, Bermuda, Brazil, Canada, Chile, China, Colombia, Denmark, France, Germany, India, Italy, Japan, Mexico, Netherlands, Norway, Portugal, Russia, Singapore, Spain, Sweden, United Kingdom.
Questions about this recall
Why was it recalled?
Generations 67 and above of VITROS Ca Slides are experiencing an increased occurrence of Condition Code TH4-63J during calibration on VITROS XT 3400 and VITROS XT 7600 Systems, causing calibration failures that delay calcium test results and potentially impact patient management. The imaging reflectometer algorithm detects excessive "spikes" (imperfections) in slide images and generates the TH4-63J condition code when the threshold of 600 spikes is exceeded. Updated analysis revealed a 19-fold increase in failure rates from 0.0043% (2024 baseline) to 0.082% for Generation 67+ slides in 2025, with 100% of calibrator failures occurring at the lowest concentration level. This can result in delayed diagnosis and treatment of conditions such as hypercalcemic crisis, parathyroid disorders, and other calcium-related emergencies requiring urgent intervention.
Which lots are affected?
Catalog Number: 145 0261; UDI-DI: 10758750009114; Affected GENs: 67 and above;
Where was it sold?
Worldwide distribution - US Nationwide and the countries of Australia, Belgium, Bermuda, Brazil, Canada, Chile, China, Colombia, Denmark, France, Germany, India, Italy, Japan, Mexico, Netherlands, Norway, Portugal, Russia, Singapore, Spain, Sweden, United Kingdom.
What should I do if I have it?
Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.
What does Class II mean?
Class II means the product may cause temporary or medically reversible health problems, or the probability of serious harm is remote.
Read the official FDA notice · Source record retrieved 26 Sep 2026. The FDA describes openFDA data as unvalidated; the official notice takes precedence. This page reports the record and gives no medical advice.
More recalls from Ortho-Clinical Diagnostics
All 311| Reported | Class | Recall | Company | Reason | Where |
|---|---|---|---|---|---|
| Device | CLASS II | Chemistry Products LAC Slides recalled by Ortho-Clinical Diagnostics | Ortho-Clinical Diagnostics | Device Malfunction | Nationwide |
| Device | CLASS II | Vitros Chemistry Products LAC Slides recalled | Ortho-Clinical Diagnostics | Device Malfunction | Nationwide |
| Device | CLASS II | Vitros Chemistry Products CHE Slides (Japan) recalled | Ortho-Clinical Diagnostics | Labeling Errors | Nationwide |
| Device | CLASS II | Vitros Chemistry Products CHE Slides recalled | Ortho-Clinical Diagnostics | Labeling Errors | Nationwide |
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