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When a sensitive contemporary assay (Ortho Clinical Diagnostics Vitros ES cTnI) was used, a 6-h [delta] based on an optimized 30% change improved diagnostic specificity from 77% to 91%, whereas diagnostic sensitivity changed from 94% based on the 99thpercentile value, compared with 75% based on the [delta] value (11).
The combination of a cardiac troponin value [greater than or equal to] 99th percentile and dynamic change should improve the diagnostic specificity of cardiac troponin, but the absolute or proportional change for optimal diagnostic performance and the ideal timing of samples have not been determined.
3) and associated diagnostic sensitivity, diagnostic specificity, and PPV (see online Supplemental Table 4) and taking into account the data for PCR (see online Supplemental Table 1), we decided on an S/Co ratio of 20.
Given that patients need quick and efficient treatment, the testing procedure must be performed in the shortest time with the best available technique in terms of rapidity, diagnostic specificity, and diagnostic sensitivity.
For the prediction of significant fibrosis, AUC, diagnostic sensitivity, and diagnostic specificity of AOL were 0.
Diagnostic specificity was based on the number of true negatives (TN) and unconfirmed positives (FP), with specificity = 100 x TN/(TN + FP).
To further assess the potential influences of posture on diagnostic specificity, we adjusted the test results in the 644 patients without pheochromocytoma for the influence of sitting.
Diagnostic sensitivity was calculated as the percentage of sera from patients reported as positive based on the laboratory cutoffs for each assay, whereas diagnostic specificity was calculated as the percentage of control sera (group IV) reported as negative based on the same threshold.
CDT shows an overall diagnostic specificity that is distinctly higher when compared with other markers of chronic alcohol abuse, e.
Chemical and diagnostic specificity of laboratory tests.
The criteria commonly used to judge the diagnostic performance of a biochemical test are diagnostic sensitivity, diagnostic specificity, and predictive values of the positive and the negative tests (11, 12).

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