Cardinal Health Nuclear Pharmacy Services Cardinal Health's pharmaceutical segment operates the world's largest network of nuclear pharmacies and is expanding its positron emission tomography (PET) agent manufacturing capabilities.  For over a quarter of a century, the Nuclear Pharmacy Services business of Cardinal Health has set the standard for the radiopharmaceutical industry.   This business is responsible for manufacturing, dispensing and delivering products that aid in the early diagnosis and treatment of disease.   Nuclear Pharmacy Services, whose network of over 150 pharmacies fills 65% of radiopharmaceutical unit doses nationwide, has consistently demonstrated leadership through innovation and a commitment to excellence. Because of this commitment, our customers a