Final answer:
The proper response to a patient's inquiry about the purpose of blood tests is to give a brief description of how the tests can aid in diagnosis and treatment, and to recommend that they consult their physician for more detailed information.
Step-by-step explanation:
When a patient inquires about what information the blood tests will provide to the physician, the proper course of action is to offer a brief, understandable explanation of the tests. Phlebotomists are not typically trained to interpret laboratory results, and so while they should address the patient's question, they should avoid providing a detailed explanation and instead reassure the patient that the tests can help with diagnosis, monitoring disease progression, and guiding treatment decisions. If the patient wishes to know more specific details about their tests and potential results, it is best to direct them to discuss these matters with their physician who will have the full context of their health.