Sysmex America, Inc. recalls Sysmex PS-10 Sample Preparation System with software version 1.5 and 1.6.

Sysmex was made aware of a report of false results due to carry-over caused by the sporadic omission of the probe wash step during antibody pipetting on the PS-10 Sample Preparation System.

Sysmex PS-10 Sample Preparation System with software version 1.5 and 1.6., Catalog Number BQ716341. Product usage for automated pipetting, diluting, and specimen processing workstations for flow cytometric analysis.

A Product Notification Field Correction letter was sent to customers beginning 1/6/25. Actions: 1. Until a Sysmex representative contacts you, please do not use the instrument running PS-10 software version 1.5 or 1.6 unless it is used only to create cocktails. 2. Review the content of this communication with your facility's physician and/or pathologist and retain this letter for any future reference. 3. Please fill out the form below and email it back to Sysmex using the email address: FlowPS10@Sysmex.com Questions If you have any questions concerning this information, please contact the Technical Assistance Center at 1- 888-879-7639 An additional Product Notification Field Correction letter was sent to customers beginning 4/9/25. Software Correction The probe washing processes have been updated to incorporate essential washing steps during antibody pipetting. The PS-10 antibody pipetting washing sequence has been reinstated, ensuring a washing step is performed when switching between antibody vials. This update prevents any potential carry-over between antibody reagents. This correction addresses the potential risk of antibody carryover, as detailed in Field Correction Notice CF-08823, released in December 2024. Action 1. Please distribute this product notification as appropriate to your laboratory staff. 2. File this product notification as a part of your laboratory s quality system as required. Questions If you have questions concerning this information, please message the Sysmex Technical Assistance Center (TAC). Simply click on the support tab on the home page of the CRC, click the Create New Issue button under Help Me to send your question to TAC. Choose Technical Assistance-Equipment in the dropdown to complete the form and submit it. Sending a message to TAC is recommended for non-urgent requests. For Canadian customers, please note messages to TAC are only processed in English. For urgent requests, contact the Technical Assistance Center at 1-8

• FDA enforcement recordOfficial FDA database entry for Z-1113-2025
• FDA device classification · PEROfficial FDA classification for this device type
• CFR regulation · 21 CFR 862.2750The federal regulation governing this device
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