VITROS Chemistry Products Ca Slides — Class II medical device recall Z-2335-2025
Ongoing recall by Ortho-Clinical Diagnostics, Inc., reported 2025-08-27, distributed nationwide. Generations 67 and above of VITROS Ca Slides are experiencing an increased occurrence of Condition Code TH4-63
| Recall number | Z-2335-2025 |
|---|---|
| Product type | Medical device |
| Classification | Class II |
| Status | Ongoing |
| Voluntary or mandated | Voluntary |
| Recalling firm | Ortho-Clinical Diagnostics, Inc., Rochester, NY, United States |
| Recall initiated | 2025-07-09 |
| Classified | 2025-08-15 |
| Reported by FDA | 2025-08-27 |
| Distributed | Nationwide (US) |
| Countries outside the US | AU, BE, BM, BR, CA, CL, CN, CO, DE, DK, ES, FR, GB, IN, IT, JP, MX, NL, NO, PT, RU, SE, SG |
| Quantity | 174,215 units |
| Reason classes | software |
| UPC / GTIN / UDI-DI | 10758750009114 |
| Model numbers | 0261, 145 |
Product
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.
Machine access
This record, with every extracted code, the verbatim FDA record and provenance, is available from the recall API: GET https://api.data.aroqon.com/v1/recalls/Z-2335-2025. Look up any UPC, UDI, NDC or lot with /v1/recalls/lookup?code=…. API docs · free and paid keys.
Source: U.S. Food and Drug Administration enforcement report via openFDA (CC0). Structured by Data Foundry (recall-structuring@2); last changed 2026-09-26. Not affiliated with or endorsed by FDA. Not medical or legal advice.