What tests are typically performed with a royal blue tube with a lavender stripe?

The correct choice, which indicates that tests like lead poisoning are typically performed using a royal blue tube with a lavender stripe, is based on the specific properties and purposes of this type of tube.

The royal blue tube is designed for trace element testing, as it is free of metal contaminants that could interfere with accurate results. Lead poisoning testing falls into this category, as it requires careful handling to ensure that no extraneous metals influence the findings. This tube type is crucial for accurately measuring heavy metals, which is why it is specified for tests related to lead levels in a patient’s blood.

In contrast, the other options pertain to tests that do not require the specific contamination controls that the royal blue tube provides. Blood glucose tests, basic metabolic panels, and liver function tests can typically be performed using standard tubes that do not have the same contamination requirements. Thus, while those tests are critical for assessing various health conditions, they are not conducted using the specialized tube that the question describes.