specimen rejection

Full Definition

The laboratory decision to reject a newborn screening specimen due to factors that compromise test accuracy or reliability. Common reasons for specimen rejection include insufficient blood volume, contamination, improper collection technique, or degradation during transport. Rejected specimens require recollection, which can delay screening results and potentially impact early diagnosis and treatment.

In Context

• "Specimen rejection rates increased during the summer due to heat exposure during transport." — Quality assurance report
• "The laboratory documented the reason for specimen rejection in the information system." — Laboratory procedure