Evaluation of the Hitachi 717 analyser

[摘要] The selective multitest Boehringer Mannheim Hitachi 717 analyserwas evaluated according to the guidelines of the Comisión deInstrumentación de la Sociedad Española de Química Clinica andthe European Committee for Clinical Laboratory Standards. Theevaluation was performed in two steps: examination of theanalytical units and evaluation in routine operation.The evaluation of the analytical units included a photometric study:the inaccuracy is acceptable for 340 and 405 nm; the imprecisionranges from 0.12 to 0.95% at 340 nm and from 0.30 to 0.73 at 405nm, the linearity shows some dispersion at low absorbance forNADH at 340 nm, the drift is negligible, the imprecision of thepipette delivery system increases when the sample pipette operateswith 3 μl, the reagent pipette imprecision is acceptable and thetemperature control system is good.Under routine working conditions, seven determinations werestudied: glucose, creatinine, iron, total protein, AST, ALP andcalcium. The within-run imprecision (CV) ranged from 0.6% fortotal protein and AST to 6.9% for iron. The between runimprecision ranged from 2.4% for glucose to 9.7% for iron. Somecontamination was found in the carry-over study. The relativeinaccuracy is good for all the constituents assayed.

[学科分类] 分析化学