Customer complaint ((b)(4)) was received 09 jan 2018.On (b)(6) 2017, customer tested fresh patient sample with lot 3005747 of pakplus and received a negative result for well a.Customer received new lot of pakplus 3006225 on (b)(6) 2018.On (b)(6) 2018, customer testing with lot 3006225 of pakplus on a patient aliquot from (b)(6) 2017.The result for well a was positive.Customer also tested another patient aliquot collected from (b)(6) with lot 3005747 and well a was negative.Testing was repeated on (b)(6) 2018 using both lots.Lot 3005747 resulted in well a negative and lot 3006225 resulted in well a positive.Customer reported negative results on the patient from the initial testing.
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