What is the primary reason for conducting a confirmation test after an initial positive result?

The primary reason for conducting a confirmation test after an initial positive result is to confirm the results before action is taken. This step is crucial in ensuring the accuracy and reliability of the testing process. An initial positive result can sometimes result from various factors such as testing errors, cross-reactivity with other substances, or the presence of legal medications. Therefore, a confirmation test, which typically uses a more precise and sophisticated method, helps verify that the initial result is correct and truly indicates the presence of prohibited substances.

The confirmation test acts as a safeguard against false positives and helps maintain the integrity of the testing process. This is especially important in workplace settings, where actions based on an initial positive result could significantly impact an employee's career. By confirming the initial findings, employers can ensure they are making informed decisions based on accurate information.