The customer discovered questionable po2 results when the results were compared to cobas b123 analyzer serial number (b)(4).The samples were collected from patients after a breath therapy.Data was provided for three patient samples.Refer to the attachment to the medwatch for all data.Information concerning which results were reported outside the lab was requested, but it was unknown.There was no death, injury, or admission to a medical facility.The lot number for the cobas b123 sensor cartridge was 21543281.The expiration date was requested, but was not provided.
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