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===Breastfed babies===

In nuclear medicine, varying amounts of radiopharmaceuticals are retained in the patients for varying periods of time. Also, some radiopharmaceuticals can be transferred to breast milk and passed from mother to child during breast feeding. As a result, both the mother, and her breast milk, can be a source of radiation to the baby. Non-urgent tests should be postponed until the breastfeeding period is completed.<ref>Radiation Protection of Patients[https://www.iaea.org/resources/rpop]</ref>