True or False: If the Intoxilyzer 9000 detects an interferent, it is recommended that the operator conduct another test.

The assertion that if the Intoxilyzer 9000 detects an interferent, the operator should not conduct another test is based on the understanding of how the device processes and responds to problematic substances. When the Intoxilyzer identifies an interferent, such as certain chemicals or substances that could affect the accuracy of the readings, it signifies that the initial test results may not be reliable.

Re-running a test in the presence of an interferent could lead to skewed results, further complicating the situation and potentially misleading the operator's interpretation of a person's blood alcohol concentration. As such, the best practice when an interferent is detected is to take precautions, which may include refraining from repeating the test until the interfering factors are mitigated. This ensures that the validity and integrity of the test results are maintained.

Thus, choosing to not retest under the presence of an interferent reflects an understanding of the device's operational guidelines and the need for accurate, trustworthy results.