When might a laboratory need to take immediate action regarding a sample?

Taking immediate action on a sample is crucial when it shows signs of leaking or contamination. In cytogenetics, the integrity of samples is vital for obtaining accurate results. A leaking sample could lead to loss of material or alteration of the sample's cellular composition, rendering it unsuitable for analysis. Contamination poses similar risks, as external materials can interfere with test outcomes, potentially leading to incorrect diagnoses or treatment decisions. Therefore, addressing leaks or contamination without delay is essential to maintain the quality and reliability of laboratory work.

In contrast, typical behavior of a sample does not usually necessitate urgent action, as it indicates that the sample is functioning as expected. A sample being older than 24 hours could require attention, but the need for immediate action would depend on the type of sample and the protocols in place. Lastly, the busyness of a technician may influence workflow but does not provide a valid reason for immediate action regarding a sample.