Diagnostic Testing. Noelle Lewis Molecular Biology. Principles of Genetic testing. A genetic diagnostic test identifies a specific indicator that shows whether a person will have or develop a disorder Positive test results indicate a person has the indicator
Specificity is the fraction of people who do not have the indicator- TN
A condition is likely present when a test is positive and specificity is high.
-The Guthrie test-Phenylketonuria in infants