The American Society for Clinical Laboratory Sciences has developed a suggested code of ethics for healthcare professionals which include phlebotomists. According to the classroom text "Phlebotomy Essentials, Fourth Edition," a code of ethics, although not enforceable by law, leads to uniformity and defined expectation by the members of that profession.

Duty to the Patient

The primary objective of the ASCLS code of ethics is the patient’s welfare. The phlebotomist must strive to conform to a high standard of communication and conduct to avoid harming the patient in any way.

Duty to Colleagues and the Profession

The second objective in the code of ethics is to maintain a reputation of integrity in the profession of phlebotomy. The phlebotomist must ensure good working relationships with other health care workers to preserve a high standard of care.

Duty to Society

Phlebotomists must follow the rules and regulations of the institution in which they perform to the best of their ability. On the other hand, they must seek to change any practices that do not meet high quality standards in a continuing quest for excellence.