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The immucor laboratory tested retention product on 01feb2018, which performed as expected.The immucor laboratory also tested a returned blood sample from the customer site with retention product on 01feb2018, which yielded the expected positive outcomes, and as a result the customer's issue was not reproduced or confirmed.Immucor technical support used a remote electronic connection method on (b)(6) 2018 to assess the test wells in question on the testing instrument, which visually appeared as negative, consistent with the instrument unexpected negative outcome.(b)(4).
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