STA - Deficient VIII, Product Code: 00725. STA - Deficient VIII is an immuno-depleted human plasma intended for use in tests for the determination of factor VIII activity in plasma on STA-R and STA Compact analyzer platforms as follows: (A) STA-R Max, Product Codes: 58989, 58990 (B) STA-R Evolution, Product Codes: 58986, 58987, 58988 (C) STA Compact Max, Product Codes: 59026, 59027 (D) STA Compact, Product Codes: 58978, 58979

Stago notified on 3/4/20 end users of the risks to factor VIII tests in writing. Letters issued via email, US mail, and/or UPS overnight mail. Letter states reason for recall, health risk and action to take: To remove this cross-contamination risk, a special pre-wash has been developed for the concerned Stago methodology. It involves special washing of needle 1 before every factor VIII assay in order to eliminate any residual quantities of Emicizumab. This cleaning sequence has been implemented in the stated available software versions. Customers not possessing these software levels will be upgraded by Stago Field Support personnel. Completed enclosed acknowledgement coupon to Stago confirming you have read the letter and will apply the instructions Please fax to 1-973-644-9348 or e-mail toquality.systems@us.stago.com. For additional information, please contact your Stago Hotline at 1-800-725-0607. In addition- Since the Stago analyzer platforms are open systems, analyzer customers may be performing other factor VIII assays (e.g. LDTs, or other manufacturers factor VIII products) that Stago has no visibility to, or control over. Therefore an Information Letter issued to all other US customers of the analyzers, to alert customers to the risk that factor VIII testing on these Stago analyzers can be affected by the Emicizumab molecule, and to contact technical service teams for assistance.