Translations:Advanced Field Epi:Manual 2 - Diagnostic Tests/62/en

Multiple testing

Two or more tests can be used either sequentially or simultaneously and results interpreted in series or parallel. In parallel interpretation, an animal is considered positive if it reacts positively to either or both tests - this increases sensitivity but tends to decrease the specificity of the combined tests. In series interpretation, an animal must be positive on both tests to be considered positive - this increases specificity at the expense of sensitivity.