The initial reporter alleged that they received high results on a run of "about" 14 patient samples tested with the nh3l2 (ammonia ii) assay on a cobas 6000 c501 module, serial number (b)(4).It was reported that the samples were repeated on a second cobas c501 module, serial number (b)(4), resulting in lower values.Of the data provided five patient samples received discrepant results tested with the nh3l2 (ammonia ii) assay on cobas c501 modules: patient sample #2: the sample initially resulted in an nh3l2 value of 463 ug/dl.The sample was repeated on the second c501 module, resulting in a value of 30 ug/dl.A sample that was redrawn from the patient, resulted in an nh3l2 value of 28 ug/dl.Patient sample #4: the sample initially resulted in an nh3l2 value of 457 ug/dl and repeated as 81 on the second c501 module.Patient sample #5: the sample initially resulted in an nh3l2 value of 569 ug/dl and repeated as 243 ug/dl on the second c501 module.Patient sample #6: the sample initially resulted in an nh3l2 value of 145 ug/dl and repeated as 20 ug/dl on the second c501 module.Patient sample #7: the sample initially resulted in an nh3l2 value of 394 ug/dl and repated as 44 ug/dl on the second c501 module.
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