The customer complained of erroneous results for 1 patient tested for roche cardiac d-dimer on the h232 instrument.On (b)(6) 2015, the patient had a laboratory d-dimer result of 0.77 mg/l.On (b)(6) 2015 the patient was sent to her family doctor where the dr.'s assistant obtained a roche cardiac d-dimer result on an h232 instrument of 0.26 g/ml.No adverse event occurred.The patient is doing well.Quality controls were acceptable.The h232 instrument serial number was (b)(4).Neither the h232 instrument nor a similar device is sold in the unites states.The h232 instrument with serial number (b)(4) was returned for investigation.Retention samples of the same lot that customer used were tested on the customer's instrument and an h232 instrument used at the investigation site.The results of all measurements fulfill requirements.
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