What is the purpose of a control sample in laboratory tests?

The purpose of a control sample in laboratory tests is to validate accuracy against known standards. Control samples contain known quantities of the analyte being measured, which allows laboratory personnel to assess whether test results are accurate and reliable. By comparing test results from the control sample to expected values, labs can identify any discrepancies or technical issues that may affect the validity of patient results. It ensures that the testing process is functioning properly, thus maintaining the integrity of the laboratory's findings.

Using control samples is essential for quality assurance in laboratory settings, as it helps to confirm that the testing methods are producing dependable outcomes. This practice is vital for ensuring patient safety and providing accurate diagnoses and treatments.

The other options do not accurately reflect the role of control samples. Increasing the sample size does not relate to control samples, and they are not intended to serve as templates for tests or provide subjective interpretations. Control samples are strictly objective tools used to ensure testing reliability.