Final answer:
The correct option is B. Providing medical diagnosis and treatment is outside the scope of the phlebotomist's practice, as they are trained to handle blood collection and associated tasks, not to diagnose or treat medical conditions.
Step-by-step explanation:
The duty that is outside the scope of the phlebotomist's practice is providing medical diagnosis and treatment. Phlebotomists are trained specifically in the collection, handling, and processing of blood samples. They can perform venipuncture, capillary sticks, and arterial sticks, ensuring correct patient identification and proper labeling and storage of blood samples. However, they are not qualified to offer medical diagnoses or treatments, which are the responsibilities of licensed physicians or other advanced healthcare providers.
Tasks such as collecting blood specimens from a patient's vein, verifying patient identities before drawing blood, and properly labeling and storing blood samples are indeed within a phlebotomist's responsibilities. These are essential steps to maintain the integrity of the specimen collection process and ensure that laboratory results are accurate and correspond to the correct patient.