Evaluation of the Beckman "System TR Enzyme Analyzer"

[摘要] We evaluated 16 claims made by Beckman Instruments, Inc. for its Enzyme Analyzer (System TR), under a rigid written protocol for the Product Evaluation Subcommittee of the Standards Committee of the College of American Pathologists. We found the following to be within the company's specifications: ( a ) accuracy and precision of the temperature control; ( b ) accuracy and precision of the sample and reagent pipets; ( c ) instrument precision, both within-run and between-day; ( d ) carry-over from a sample with activity > 1000 U/liter; ( e ) instrument-to-instrument variation; ( f ) analytical linearity; ( g ) analysis time; ( h ) correlation of the instrumentprinted answer with the activity calculated manually from a strip-chart recorder; ( i ) precision of the instrument's built-in electronic "standard"; ( j ) effectiveness of the over-range indicators; and ( k ) correlation between results of these enzyme assay methods and those for kinetic methods used in our laboratory. The instrument performed well.

[学科分类] 过敏症与临床免疫学