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Iodine Test

Iodine Absorption Test

Applying a 2% Tincture of Iodine to your skin is an efficient and economical method of determining a metabolic deficiency of iodine. If the “brown” stain fades in 24 hours or less, it indicates a likelihood that iodine is not sufficient to normalize thyroid hormone production. Even if you are taking thyroid hormone orally, low iodine can prevent your thyroid from functioning properly.


  • Apply a 3” spot of 2% Tincture of Iodine to inner forearm.
  • Expose to air until dry, so that it will not stain clothing.
  • Examine the spot every 2 hours.
  • Determine how many hours it takes for the iodine spot to disappear completely.
  • Record results below.
  • Do not do this test if you have a known allergy to iodine.

Optimum: 24 hours or more

Iodine Disappeared in __________hours.


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