Table 2.

Performance characteristics for analytical methods

Characteristic	Definition
Feasibility	Utilizes accessible biological tissue and possible to scale up for routine use
Precision	Closeness of test values to one another when analyzing the same specimen
Accuracy	Closeness of test values to the true value
Specificity	Ability to measure only the intended analyte, particularly in the presence of other entities
Sensitivity	Lower limit of quantitation within a defined degree of confidence
Robustness	Assay performance maintained across sites, operators, instruments, and reagents