confirmatory testing

Full Definition

Confirmatory testing refers to the comprehensive diagnostic workup that follows a positive newborn screening result. This testing typically involves more specific biochemical assays, genetic testing, or clinical evaluations to definitively diagnose or exclude the condition flagged by the initial screen. The process is critical for distinguishing true positives from false positives and establishing accurate diagnoses before treatment initiation.

Usage

Usage note: Always lowercase unless beginning a sentence. Distinguish from repeat screening or second-tier testing.

In Context

• "The laboratory report indicated that confirmatory testing was required within 48 hours of the abnormal screening result." — Medical report
• "Parents were counseled about the importance of prompt confirmatory testing to rule out the metabolic disorder." — Clinical documentation