critical sample
A newborn screening specimen that requires immediate processing due to abnormal results or urgent clinical circumstances.
Full Definition
A critical sample designation is applied to newborn screening specimens that have generated results requiring immediate medical attention, typically within 24-48 hours of collection. This classification triggers expedited laboratory processing, immediate result reporting, and urgent clinical follow-up protocols. Critical samples may indicate conditions such as severe combined immunodeficiency, critical congenital heart disease, or severe endocrinopathies that require immediate intervention to prevent serious morbidity or mortality.
Usage
Usage note: Use consistently as 'critical sample' rather than 'critical specimen' for uniformity in newborn screening contexts.
In Context
- "The laboratory flagged this as a critical sample requiring immediate physician notification." — Laboratory communication protocol
- "Critical sample protocols ensure that time-sensitive conditions are identified within hours of testing." — Quality assurance documentation