Parallel Comparison of Accuracy in Vitek2 Auto-analyzer and API 20 E / API20 NE Microsystems

iii 302 samples were evaluated in the present study including 50 standard quality control samples, 62 repeatability samples and two separate batches of 90 and 100 samples of clinical isolates. Standard samples with registered ATCC or CCUG codes taken from international reference lab, used for performance test (quality control) of Vitek2 compact analyzer. The results of performance test showed total 98 % accuracy. Detailed performance test results showed 100 % accuracy for Gram positive & Gram negative bacteria and 95 % accuracy for NH group members. Comparison between results of different culture media showed that use of conventional culture media instead of commercial branded culture media for preparing bacterial suspensions, doesn’t affect the result’s accuracy level in Vitek2 analyzer. Repeatability and reproducibility study of 62 samples including standard & clinical isolates results, showed 96.8 % coalition in reproduced results by Vitek2 analyzer. The comparative results of 90 clinical samples via API 20E / API 20NE Microsystem