Severity
Moderate
ModerateClass IIOngoing
FDA Devices recall · Reported August 27, 2025
VITROS Chemistry Products Ca Slides; Catalog Number: 145 0261;
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, ca…
Ortho-Clinical Diagnostics, Inc. recalled VITROS Chemistry Products Ca Slides; Catalog Number: 145 0261; — a moderate-severity action.
VITROS Chemistry Products Ca Slides; Catalog Number: 145 0261; was recalled by Ortho-Clinical Diagnostics, Inc. in August 27, 2025. Reason: Generations 67 and above of VITROS Ca Slides are experiencing an increased occurrence of Condition Code TH4-6…. Check the official notice for the remedy. Verify recall #Z-2335-2025 with the FDA Devices before acting.
The recall
Ortho-Clinical Diagnostics, Inc. issued this moderate-severity FDA Devices recall — Generations 67 and above of VITROS Ca Slides are experiencing an increased occurrence of Condition Code TH4-6….
- Moderate
- severity level
- 174K units
- affected scope
- Class II
- classification
- August 27, 2025
- reported
Sourced from official FDA Devices enforcement records. Verify recall #Z-2335-2025 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This FDA Devices action (record #Z-2335-2025) was formally reported on August 27, 2025, with the manufacturer initiating the action on July 9, 2025. It is classified under Moderate severity (Class II), with a current status of Ongoing. Ortho-Clinical Diagnostics, Inc. is listed as the recalling firm, operating out of Rochester, NY. Federal records list the affected scope as 174,215 units, a scale large enough to require multi-state distribution tracking.
The documented reason for this recall is: 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 ca… Distribution data in the federal record shows the product reached: 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, Russ…. Distribution scope directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory.
Within the same product category the archive holds 6 closely related recalls, 6 from FDA Devices — clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Medical Devices recalls over time
Where this recall sits in its category — 40,409 medical devices recalls on record
Where this recall sits in the database
Of 100,165 recalls in the database, 23,668 are high severity, 72,097 moderate, and 4,400 low. This recall is classified moderate severity.
Counts reflect market size and reporting activity, not inherent danger — we do not rank products by risk from raw recall volume.
Affected scope
174,215 units
Related Recalls
6
6 from same agency
Product description
VITROS Chemistry Products Ca Slides; Catalog Number: 145 0261;
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.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | U.S. Food and Drug Administration |
| Severity class | Moderate (Class II) |
| Status | Ongoing |
| Recall number | Z-2335-2025 |
| Date reported | August 27, 2025 |
| Date initiated | July 9, 2025 |
| Recalling firm | Ortho-Clinical Diagnostics, Inc. |
| Firm location | Rochester, NY |
| Affected scope | 174,215 units |
| Distribution | 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… |
Profile values are sourced directly from the official FDA Devices enforcement record. Source: U.S. Food and Drug Administration.
What to do with this recall
Match your product against the recall record, then act on the agency remedy.
- Check the recall number (Z-2335-2025) and product description against the item you own. Search the archive
- Confirm the current status with FDA Devices before acting — recall details can be updated.
- Follow the documented remedy (refund, replacement, repair, or disposal) rather than general advice. What to do next
This page summarizes the official FDA Devices record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
Frequently Asked Questions
What product was recalled? ▼
VITROS Chemistry Products Ca Slides; Catalog Number: 145 0261;. Recalled by Ortho-Clinical Diagnostics, Inc.. Units affected: 174,215 units.
Why was this product 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 agency issued this recall? ▼
This recall was issued by the FDA Devices on August 27, 2025. Severity: Moderate. Recall number: Z-2335-2025.
Where was the recalled product distributed? ▼
Distribution: 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..
How do I check if my product is affected by a recall? ▼
Check the product description and recall number (Z-2335-2025) against your product. Visit the official FDA Devices website for the most current information. You can also use our Recall Checker tool to search by product name or brand.
Should I stop using a recalled medication or medical device? ▼
Do not stop using a recalled medication or device without consulting your healthcare provider first, as abruptly discontinuing treatment could pose its own health risks. Your doctor can advise on alternatives or whether the recall applies to your specific product lot. Check the recall number and lot information against your product packaging.
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Data Sources
Source: FDA, CPSC, and NHTSA federal recall databases. This recall: FDA Devices, reported August 27, 2025.
- Source: FDA — Food and Drug Administration, openFDA Enforcement API (food, drug, and medical device recalls)
- Source: CPSC — Consumer Product Safety Commission Recalls API (consumer product recalls and hazards)
- Source: NHTSA — National Highway Traffic Safety Administration Recalls API (vehicle safety recalls)
Recall information is sourced from official federal agency databases. Always verify recall details with the issuing agency for the most current status. This information is for research and awareness purposes only.
Every figure on PlainRecalls is rendered directly from official FDA, CPSC and NHTSA recall records — no number is typed in by an editor. Severity classes follow each agency's own taxonomy (FDA Class I/II/III; CPSC and NHTSA by hazard type), and related-recall context is computed across the full archive. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.