Final answer:
A phlebotomist seeking certification from a national phlebotomy agency.
Step-by-step explanation:
A phlebotomist who takes an examination prepared by a national phlebotomy agency is seeking certification or a certificate. The American Society of Phlebotomy Technicians issues certificates to individuals passing a national examination, which validates their skill in phlebotomy. This certification demonstrates their competence and expertise in drawing blood and performing venipuncture. It is highly valued by employers in medical laboratories, hospitals, and other healthcare settings.