specimen adequacy
The quality assessment of blood samples to determine if they meet standards for reliable analytical testing.
Full Definition
Specimen adequacy in newborn screening refers to the evaluation of blood samples to ensure they meet quality standards necessary for accurate analytical results. Assessment criteria include blood volume (proper saturation of filter paper circles), absence of contamination, appropriate collection technique, and sample integrity during transport and storage. Inadequate specimens may result in analytical interference, unreliable results, or inability to perform testing, necessitating recollection. Standardized adequacy criteria help maintain consistent quality across collection sites and reduce the need for repeat sampling.
Usage
Usage note: Use as two words; focus on objective criteria rather than subjective assessment.
In Context
- "Specimen adequacy assessment revealed insufficient blood saturation requiring sample recollection." — laboratory rejection report
- "Training programs emphasize specimen adequacy criteria to reduce rejection rates and improve turnaround times." — quality improvement initiative