Ortho-Clinical Diagnostics, Inc.

VITROS Chemistry Products LAC Slides on VITROS XT 3400 and VITROS XT 7600 Systems are experiencing an increased occurrence of calibration failure related to lots from coating 0130 and above with Condition Code TH4-63J during calibration, causing the delay of lac test results and potentially impact patient management. The issue was identified by QuidelOrtho through an increase in customer complaints compared to the historical baseline with average failure rate of 1% for coating 0130 in 2025 while average of failure rate for other coating was 0.06% in 2025 and average of failure rate for all coatings is 0.03% for 2024.

VITROS Chemistry Products LAC Slides on VITROS XT 3400 and VITROS XT 7600 Systems are experiencing an increased occurrence of calibration failure related to lots from coating 0130 and above with Condition Code TH4-63J during calibration, causing the delay of lac test results and potentially impact patient management. The issue was identified by QuidelOrtho through an increase in customer complaints compared to the historical baseline with average failure rate of 1% for coating 0130 in 2025 while average of failure rate for other coating was 0.06% in 2025 and average of failure rate for all coatings is 0.03% for 2024.

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.

Quality control (QC) drift when certain lots of Performance Verifiers (PVs) are used with certain lots of cholinesterase enzyme (CHE) slides. This drift occurs when the PVs are used 2-7 days after reconstitution; however, the label stability claims for the PV fluids is 7 days following reconstitution. This may lead to inaccurate QC results. The use of the PVs when the QC results are outside of the customer s established ranges could result in delayed results for patients due to the need to repeat QC testing or reconstitute new PV fluids and repeat testing. It could also result in erroneous patient results (small positive bias).

Quality control (QC) drift when certain lots of Performance Verifiers (PVs) are used with certain lots of cholinesterase enzyme (CHE) slides. This drift occurs when the PVs are used 2-7 days after reconstitution; however, the label stability claims for the PV fluids is 7 days following reconstitution. This may lead to inaccurate QC results. The use of the PVs when the QC results are outside of the customer s established ranges could result in delayed results for patients due to the need to repeat QC testing or reconstitute new PV fluids and repeat testing. It could also result in erroneous patient results (small positive bias).

Quality control (QC) drift when certain lots of Performance Verifiers (PVs) are used with certain lots of cholinesterase enzyme (CHE) slides. This drift occurs when the PVs are used 2-7 days after reconstitution; however, the label stability claims for the PV fluids is 7 days following reconstitution. This may lead to inaccurate QC results. The use of the PVs when the QC results are outside of the customer s established ranges could result in delayed results for patients due to the need to repeat QC testing or reconstitute new PV fluids and repeat testing. It could also result in erroneous patient results (small positive bias).

Quality control (QC) drift when certain lots of Performance Verifiers (PVs) are used with certain lots of cholinesterase enzyme (CHE) slides. This drift occurs when the PVs are used 2-7 days after reconstitution; however, the label stability claims for the PV fluids is 7 days following reconstitution. This may lead to inaccurate QC results. The use of the PVs when the QC results are outside of the customer s established ranges could result in delayed results for patients due to the need to repeat QC testing or reconstitute new PV fluids and repeat testing. It could also result in erroneous patient results (small positive bias).

Lots from Generation (GEN) 15 of VITROS Chemistry Products OP Reagent may generate lower than expected quality control (QC) results. If the customer is unable to get passing quality control results, then the customer would be unable to run the OP-LO protocol leading to a potential delay in patient results.

a software anomaly allows test results to be reported using Micro Tip and Micro Slide diluent packs that the system treats as expired even when the Use Expired Reagents setting is not enabled if a shelf expiration date is omitted during manual loading. The issue was identified by a customer complaint, in which a CREA Urine test was processed with an RE (Reagent Expired) code, even though the diluent pack was not expired and the use-expired-reagents setting was disabled. This can result in erroneous test results and/or delaying test results.

a software anomaly allows test results to be reported using Micro Tip and Micro Slide diluent packs that the system treats as expired even when the Use Expired Reagents setting is not enabled if a shelf expiration date is omitted during manual loading. The issue was identified by a customer complaint, in which a CREA Urine test was processed with an RE (Reagent Expired) code, even though the diluent pack was not expired and the use-expired-reagents setting was disabled. This can result in erroneous test results and/or delaying test results.

A software anomaly allows test results to be reported using Micro Tip and Micro Slide diluent packs that the system treats as expired even when the Use Expired Reagents setting is not enabled if a shelf expiration date is omitted during manual loading. The issue was identified by a customer complaint, in which a CREA Urine test was processed with an RE (Reagent Expired) code, even though the diluent pack was not expired and the use-expired-reagents setting was disabled. This can result in erroneous test results and/or delaying test results.

It was determined that there could be a false positive rate of up to 16.7% for the affected lots associated with the Bordetella parapertussis (BPP) results (only) of the assay.

Product was incorrectly assigned GEN 88 instead of GEN 83 on product carton, foil wrapper, and cartridge (cart) label.

The VITROS 3600 Immunodiagnostic System software versions 3.8.0 may not correctly notify users if the Signal Reagent Pack exceeds the on-board and/or shelf-life expiration date. This could result in the use of expired products, which would increase the risk of no results or erroneous results from the instrument.

The VITROS XT 7600 Integrated System software versions 3.8.0 may not correctly notify users if the Signal Reagent Pack exceeds the on-board and/or shelf-life expiration date. This could result in the use of expired products, which would increase the risk of no results or erroneous results from the instrument.

The VITROS 5600 Integrated System software versions 3.8.0 may not correctly notify users if the Signal Reagent Pack exceeds the on-board and/or shelf-life expiration date. This could result in the use of expired products, which would increase the risk of no results or erroneous results from the instrument.

May Generate Negatively Biased Results When Testing Samples with High Concentrations of CRP, showing less than upper AMI of 90 mg/L (in the 70-90 mg/L range) while the samples having higher than 90 mg/L. User no way to know if the sample has to be diluted to measure again.

The reason for this recall is QuidelOrtho has determined that during normal use the VITROS XT ALB-TP Slides may shed dust and debris as they travel through the MicroSlide Subsystem of the VITROS XT 3400 or VITROS XT 7600 analyzer. This dust and debris may then settle onto VITROS Na+ (Sodium) Slides as they are processed through the same MicroSlide Subsystem, potentially resulting in an increase in non-reproducible, positively, or negatively biased Na+ results. The level of bias will depend on where the dust and debris settle on the Na+ MicroSlide and may impact Na+ measurements to varying degrees inside and outside of the measuring range depending on the amount of contamination. All of which could vary from no/low bias with no patient harm, to extreme bias (falsely elevated or reduced results) potentially resulting in incorrect diagnosis; treatment; and/or a serious patient health hazard (for example, hypernatremia or hyponatremia). This issue may also potentially generate error codes preventing the analyzer from processing the MicroSlide Assays and cause delay of the patient results. All current and expired VITROS XT Chemistry Products ALB-TP slides are affected by this issue.

It was confirmed that fibrinogen in patient plasma samples precipitates out of solution upon the addition of folate stabilizer reagent as part of the pre-treatment process causing the increase in "TM5-4MB" condition codes which lead to a delay of results.

VITROS Chemistry Products FS Diluent Pack 3, Lot 01-1645 may cause results to be negatively biased when used to dilute patient samples tested with VITROS Chemistry Products CRP Slides.

Kit assigned an extended expiration date of 24-Jul-2025 during release. The correct expiration date for Lot 2953 is 24-Jul-2024. If used past its true expiration and the customer does not have their Assay Data Disk (ADD) updated, the system will allow them to use the expired calibrator which may bias the results. However, at this time the calibrator is within its use date and will function appropriately.

Potential for positively biased results due to signal reduction over shelf life.

The results generated by the VITROS Immunodiagnostic Products Vitamin B12 Range Verifier Lot# 1200 RV Level 2 may cause range verification failure. The issue is detectable by the user when the product fails to meet the required range during processing of RV Level 2 of this lot. There is a potential for a delay in patient test results should the user have a need to switch to an alternate method of range verification including use of an alternate lot. As this issue affects the upper limit range verification, there is no impact to VITROS Immunodiagnostic Products Vitamin B12 assay performance. Were the assay to not perform as expected, the failure would be detectable by Quality Control. Past patient sample results are unaffected, and no review of reported results is required.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.0 and 3.8.1 causes the Configurable Westgard Rules to not report as expected. When a new control is defined, configurable Westgard rules, if selected, are not flagged or reported with the applicable QC results if the statistical criteria is met. This may result in acceptance of QC results that do not meet acceptance criteria, which may cause erroneous patient results to be reported.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.0 and 3.8.1 causes the Configurable Westgard Rules to not report as expected. When a new control is defined, configurable Westgard rules, if selected, are not flagged or reported with the applicable QC results if the statistical criteria is met. This may result in acceptance of QC results that do not meet acceptance criteria, which may cause erroneous patient results to be reported.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.0 and 3.8.1 causes the Configurable Westgard Rules to not report as expected. When a new control is defined, configurable Westgard rules, if selected, are not flagged or reported with the applicable QC results if the statistical criteria is met. This may result in acceptance of QC results that do not meet acceptance criteria, which may cause erroneous patient results to be reported.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.0 and 3.8.1 causes the Configurable Westgard Rules to not report as expected. When a new control is defined, configurable Westgard rules, if selected, are not flagged or reported with the applicable QC results if the statistical criteria is met. This may result in acceptance of QC results that do not meet acceptance criteria, which may cause erroneous patient results to be reported.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.0 and 3.8.1 causes the Configurable Westgard Rules to not report as expected. When a new control is defined, configurable Westgard rules, if selected, are not flagged or reported with the applicable QC results if the statistical criteria is met. This may result in acceptance of QC results that do not meet acceptance criteria, which may cause erroneous patient results to be reported.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.1 causes QC baseline statistics to not update as expected when changed by the user. This may cause erroneous patient results to be reported.

A software defect affecting VITROS Systems running VITROS Software Versions 3.8.1 causes QC baseline statistics to not update as expected when changed by the user. This may cause erroneous patient results to be reported.