What is the purpose of sample retention?

The purpose of sample retention is primarily concerned with keeping part of the sample for later testing. This practice is important for several reasons, including verification of results, potential additional analyses if initial tests indicate unexpected findings, and compliance with regulatory requirements. By retaining samples, researchers and analysts can revisit the original material if needed, addressing any concerns or discrepancies that might arise in the initial analysis.

Retaining samples also provides the opportunity to conduct further tests that might not have been initially considered or required, thereby enhancing the reliability and thoroughness of the assessment. This ability to reference the original sample allows for greater scrutiny and validation of test results, contributing to more accurate conclusions and improved public health outcomes.

In contrast, options focusing on preventing contamination, increasing sample size, or ensuring immediate testing do not capture the primary intent of sample retention, which is fundamentally about maintaining an archive for future examination or confirmation of results.