specificity

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specificity

[‚spes·ə′fis·əd·ē]
(chemistry)
The selective reactivity that occurs between substances, such as between an antigen and its corresponding antibody.
References in periodicals archive ?
In contrast to previous studies that included all comers with nontraumatic chest pain, the diagnostic specificity of the absolute [delta] criterion in this study was lower (75%) when trying to discriminate between AMI and other causes of necrosis.
We assessed if the dynamic change ([delta]) between the 2 measurements could improve diagnostic sensitivity when early hs-cTnT values were <99th percentile (and thus "rule out" of AMI) and/or improve diagnostic specificity when early hs-cTnT values were [greater than or equal to] 99th percentile (and thus "rule in" of AMI).
We compiled ROC curves to estimate diagnostic sensitivity, diagnostic specificity, and cutoff values (8.
0] values were used for cutoff determinations and diagnostic specificity and sensitivity calculations.
We evaluated the diagnostic specificity of the assays using precharacterized seasonal influenza A and B and avian influenza virus culture samples (see online Supplemental Table S2) and observed no cross-reactivity.
Adjusting the supine data in the 644 patients without pheochromocytoma for the projected 30% and 27% sitting-associated increases in plasma normetanephrine and metanephrine resulted in a diagnostic specificity of 89%.
The IA-2A TR-IFMA had a diagnostic specificity similar to that of the RBA [99 (93-110)% and 97 (91-99)%, respectively].
We found that when RCVs from creatinine and urate combined were used to predict crises, the FP probability was reduced and there was a considerable increase in diagnostic specificity.
The HIPA and MAIPA tests detect antibodies against a complex of heparin and platelet factor 4 but suffer from low diagnostic specificity and accuracy.
Therefore, RF assays lack diagnostic specificity, which is not conducive to making an early RA diagnosis.

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