Final answer:
The American Society of Phlebotomy Technicians issues certificates to qualified individuals after passing a national examination, and not government agencies such as the NIH, CDC, or HHS.
Step-by-step explanation:
Phlebotomy certifications are provided by professional organizations dedicated to this area of healthcare. The American Society of Phlebotomy Technicians is one such organization that issues certificates to individuals who have passed their national examination. While there are various entities that might employ phlebotomists, including private hospitals and nonprofit health organizations, it is not the National Institutes of Health, Centers for Disease Control, or Health and Human Services that give out phlebotomy certifications. Certifications are crucial as they validate a phlebotomist's skills in venipuncture, capillary sticks, and arterial sticks, and affirm their ability to correctly handle and analyze blood samples which is essential in supporting medical diagnoses and treatments.