Iodine is an essential micronutrient for thyroid hormone function. The government has implemented mandatory salt iodization to control iodine deficiency disorder (IDD). Spirulina is a microalgae contaiing 94,5μg/g iodine (60 percent RDI of iodine in adult woman), which can be used as alternative source of natural iodine. The purpose of this study was to determine the effect of spirulina supple…