4: Down syndrome

Question 1

what is a diagnostic test?

Answer 1

Diagnostic tests are used on people who show symptoms of a disease or asymptomatic people who test positive on screening in order to establish a diagnosis.
A diagnostic test determines whether there is a condition with 100% precision.

Question 2

what is a screening test?

Answer 2

Screening tests on the other hand, look at the risk of a condition. Unlike diagnostic tests which screen for the condition or disease itself, screening tests aim to detect potential disease indicators and asymptomatic, at-risk individuals.