Which of the following tests is used to measure blood lead levels?

The Blood Lead Level (BLL) test is specifically designed to measure the concentration of lead in a person's bloodstream. Lead exposure can have significant health impacts, particularly in children, so this test is crucial for assessing lead poisoning risk and determining the need for intervention or treatment. It involves taking a blood sample and analyzing it to quantify the level of lead present.

In contrast, the other tests listed serve different health purposes. The Blood Glucose Test measures sugar levels in the blood and is used to diagnose and manage diabetes. The Respiratory Function Test evaluates lung capacity and airflow, relevant for respiratory diseases. The Complete Blood Count Test provides information about the various components of blood, like red and white blood cells, but does not specifically determine lead levels. Each test serves its unique purpose, but the BLL test is the only one focused on assessing lead exposure.