MSS CASSETTE GLU/LAC/UREA (BUN) as a part of the Roche OMNI S Analyzer: cobas b 221<6>Roche OMNI S6 system The Roche Diagnostics Omni S Analyzer is a fully automated critical care analyzer intended to be used for the measurement of pH, PCO2, PO2, sodium, potassium, ionized calcium, chloride, hematocrit, glucose, lactate, urea/BUN, total hemoglobin, oxygen saturation, oxyhemoglobin, deoxyhemoglobin, carboxyhemoglobin, and methemoglobin in samples of whole blood, serum, plasma, and aqueous solutions as appropriate

Reason: Incorrect Urea results may be generated sporadically on cobas b 221<6>Roche OMNI S6 system and cannot be detected by QC. QC measurement results can be affected as well. This issue is only detectable if comparison result of a second measurement is available. The cause for this issue is an error in the software measurement procedure. In children, decreased urea results can point at inborn disorders or urea cycle. Therefore, false normal urea values could lead to delayed/incorrect diagnosis of such a disorder. Besides the patients most at risk, the risk for the overall patient population with falsely low or high values is considered remote. No severe adverse health effects are expected; but, unnecessary diagnostic measures may be initiated. Falsely normal results may result in further necessary examination not being carried out, with the possibility of a delay in the diagnosis and treatment. A medical risk cannot entirely be excluded.

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