Pediatric Terrorism and Disaster Preparedness: Table 6.9

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Table 6.9. Threshold Radioactive Exposures and Recommended Prophylactic Single Doses of KI

Patients by Age/Sex	Predicted Thyroid Exposure (Gy)	KI Dose (mg)	No. of 130-mg tablets	No. of 65-mg tablets
Adults >40 yr old	>5	130	1	2
Adults 18-40 yr	>0.1	130	1	2
Pregnant or lactating women	>0.05	130	1	2
Adolescents 12-18 yr old	>0.05	130	1	2
Children 3-12 yr old	>0.05	>65	1/2	1
Children 1 mo to 3 yr old	>0.05	32	1/4	1/2
Neonates birth to 1 mo old	>0.05	16	1/8	1/4

Source: Adapted from U.S. Department of Health and Human Services, Food and Drug Administration (FDA), Center for Drug Evaluation and Research. Potassium Iodide as a Thyroid Blocking Agent in Radiation Emergencies. Available at http://www.fda.gov/cder/guidance/4825fnl.htm.

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