Ancillary care is currently one of the fastest growing sectors of healthcare, providing cost-effective treatment alternatives for outpatient hospital and primary care services. Ancillary services refer to the wide range of healthcare diagnostic and support services that are provided to support the primary care physician and fall into three groups: diagnostic, therapeutic, and custodial. Ancillary services are generally located in hospitals (e.g. a pharmacy), medical offices (such as when a physician runs a glucose test on a patient’s blood or analyses a urine sample) or free-standing diagnostic testing facilities. The latter have their own medical staff that can provide ancillary services similar to those provided in hospitals and medical offices.