unsatisfactory for age
Specimen rejection category indicating the blood sample was collected outside the optimal timing window for accurate screening results.
Full Definition
Unsatisfactory for age is a specimen rejection criterion used when blood samples are collected either too early or too late in the newborn period to provide reliable screening results. Specimens collected before 24 hours of age may not accurately reflect the infant's metabolic state due to maternal influences and physiological transitions. Conversely, specimens collected beyond the recommended timeframe may miss the critical window for early detection and intervention. This classification triggers automatic recollection protocols to ensure appropriate screening coverage.
Usage
Usage note: Maintain consistent capitalization when used as a formal specimen status designation.
In Context
- "The laboratory marked the specimen as unsatisfactory for age because it was collected at 18 hours of life." — Quality control report
- "Specimens classified as unsatisfactory for age require immediate recollection to ensure timely screening completion." — Follow-up protocol