Final answer:
A phlebotomist should perform liquid controls for quality control when a new lot or kit is opened to ensure the CLIA-waived point of care test's accuracy.
Step-by-step explanation:
When performing a CLIA-waived point of care test, a phlebotomist should perform liquid controls for quality control when a new lot or kit is opened. Quality control is a crucial aspect of clinical laboratory work to ensure the accuracy and reliability of test results. It is important to adhere to the specific protocol for the device being used, which typically includes running quality control tests with a new lot of reagents or when a new test kit is started. This helps to verify that the test components are working correctly and providing accurate results.