The initial reporter stated that they received discrepant results for a total of 9 patient samples tested with the elecsys tsh assay, elecsys ft3 iii, and the elecsys ft4 iii assay on a cobas 8000 e 801 module.
It was asked, but it is not known if any incorrect results were reported outside of the laboratory.
This medwatch will apply to the tsh assay.
Please refer to the medwatch with patient identifier (b)(6) for information related to the ft3 assay and refer to the medwatch with patient identifier (b)(6) for information related to the ft4 assay.
The samples were initially tested on this customer's e801 analyzer on (b)(6) 2019.
The samples were repeated on a centaur analyzer.
The samples were provided for investigation where they were tested on a cobas 8000 e 602 module on (b)(6) 2019.
For investigation, the samples were also tested on a second e801 analyzer and a cobas e 411 immunoassay analyzer on (b)(6) 2019.
No adverse events were alleged to have occurred with the patients.
The serial number of the e602 analyzer used for investigation is (b)(4).
Tsh reagent lot number 394674, with an expiration date of 30-jun-2019 was used on this analyzer.
The serial number of the e801 analyzer used for investigation is (b)(4).
Tsh reagent lot number 365417, with an expiration date of 28-feb-2020 was used on this analyzer.
The serial number of the e411 analyzer used for investigation is (b)(4).
Tsh reagent lot number 373386, with an expiration date of 30-jun-2019 was used on this analyzer.
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