97 / 134
Laboratory probability of detection (LPOD)
POD value obtained from combining all valid collaborator data
sets for a method for a given matrix at a given analyte level or
concentration.
False‐negative rate
Proportion of test results that are negative, contained within a
population of known positives.
False‐positive rate
Proportion of test results that are positive, contained within a
population of known negatives.
Predictive value (negative)
The probability that an animal is free from exposure or infection given that
it tests negative; predictive values are a function of the DSe (diagnostic
sensitivity) and DSp (diagnostic specificity) of the diagnostic assay and the
prevalence of infection.
Predictive value (negative)
The probability that an animal has been exposed or infected given that it
tests positive; predictive values are a function of the DSe and DSp of the
diagnostic assay and the prevalence of infection.
Sensitivity (analytical)
Synonymous with “Limit of Detection‟, smallest detectable amount of
analyte that can be measured with a defined certainty; analyte may
include antibodies, antigens, nucleic acids or live organisms.