Influence of Iodine Deficiency and Excess on Thyroid Function Tests

  • Maria Andersson
  • Michael B. ZimmermannEmail author
Part of the Thyroid Function Testing book series (ENDO, volume 28)


Iodine is an essential component of the thyroid hormones, and adequate iodine intake is necessary for normal thyroid function. The iodine intake of populations is assessed by measuring urinary iodine concentration (UIC) in a spot urine sample [1]. The recommendations for daily iodine intake and the recommended levels for optimal iodine nutrition by age and population group are shown in Table 3.1 [1, 2]. The epidemiological criteria for classifying the degree of iodine status in a population based on median or range of UIC or both UIC cutoffs are listed in Table 3.2.


Thyroid Stimulate Hormone Iodine Deficiency Iodine Intake Thyroid Stimulate Hormone Level Urinary Iodine Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Institute of Food, Nutrition and Health, Swiss Federal Institute of Technology Zurich (ETH Zurich)Human Nutrition LaboratoryZurichSwitzerland

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