The customer returned a plasma sample and a serum sample for investigation.
The investigation on the serum sample was able to reproduce the customer¿s results.
The sample was tested for interference, but no interfering factors were found.
The differences in the tsh values, generated with the analyzers from roche diagnostics and abbott, are caused by differences of the setups of the assays, the antibodies used, and differences of the standardization materials and procedures used.
A product problem was not identified.
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