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Patient sid; (b)(6).All available patient information was included, no additional patient information was available.Region state; (b)(6).Postal code (b)(6).Correction/removal number = 3005094123-10/22/18-001-c.Product correction letters were issued on (b)(6) 2018 to all architect total t3 (tt3) and free t3 (ft3) customers, using the i1000sr, i2000, or i2000sr instruments and who received one of the impacted lots.The letter instructed the customers to prevent this interaction by either separating the architect ft3 and/or architect tt3 assays by running these tests on different instruments from the following assays [architect tsh, architect t-uptake, architect hiv ag/ab combo, architect cortisol, architect lh, architect progrp, architect rhtlv-i/ii, architect total psa, architect afp, and architect free psa, architect 25-oh vitamin d], or by performing daily maintenance on the instrument prior to performing batch testing for all ft3 and/or tt3 samples.The mechanism of carryover involves carryover of poly-l-lysine (pll) from other assays into the conjugate dispense step in the ft3 and tt3 assays through adherence of the pipetting probe.
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The customer observed a decrease and imprecision in architect total t3 patient values while processing with the reagent lot numbers 13003ui00 and 15506ui00.Following patient data were provided by the customer.Reagent lots 15506ui00 15506ui00 14378ui00: sample 1 26.09 46.5 64.46, sample 2 <25.00 35.9 55.9, sample 3 49.18 56.89, sample 4 50.49 56.79.Sid 17380ui00 15506ui00 13003ui00: (b)(6) 71.07 67.54 40.81, (b)(6) 54.03 52.73 <25.00, (b)(6) 69.84 74.04 44.92, (b)(6) 62.52 75.04 53.6.No adverse impact to patient management was reported.
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