The investigation determined that lower than expected vitros ca results were obtained from a single linearity sample samples using two vitros ca slide lots on a vitros 350 chemistry system.The investigation concluded that the most likely cause of the lower than expected vitros ca results was related to an unknown cap linearity sample issue.Although vitros 350 system performance tests were not performed, there was no evidence to suggest the vitros 350 system malfunctioned.Historical vitros ca quality control results exhibited acceptable performance of vitros ca slide lots 0332-0532-1134 and 0337-0538-6119.There was no evidence to suggest the reagent malfunctioned.
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