Iodine, plasma

Item# LC070034

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  • Iodine, plasma
  • Item Catalog Number: LC070034

Iodine is a health-promoting trace element found in sea vegetables and plants. Iodine is essential for the body and is detected in every organ and tissue. It is found in high levels in the thyroid, breast, liver, lung, heart, and adrenals.

Its primary biological role is in the production of the thyroid hormones, which have powerful influences on cardiovascular health, energy, metabolism, and weight. It also helps support breast and brain health and can even function as an antioxidant.

This blood test is used to monitor thyroid problems such as iodine-induced hypothyroidism, autoimmune inflammation of the thyroid gland, and hyperthyroidism associated with excessive iodine intake. One of the current controversies in the Iodine field is how much iodine is good for the human body. Some experts claim that the RDA is appropriate (about 150 mcg per day), while others claim that much larger amounts are needed and recommend supplementation.

This test is not designed to determine optimal iodine status in an individual choosing to supplement with iodine; careful consideration of other thyroid function tests as well as clinical symptoms is essential. Currently, there is no generally agreed upon iodine test that can evaluate optimal iodine dosing.

Fasting is not required. Take all medications as prescribed.


The laboratory services are for informational purposes only. It is not the intention of National Diagnostics, Inc and Life Extension to provide specific medical advice but rather to provide users with information to better understand their health. Specific medical advice including diagnosis and treatment will not be provided. Always seek the advice of a trained health professional for medical advice, diagnosis or treatment.

Both the physician and the testing laboratory are independent contractors with whom National Diagnostics, Inc makes arrangements for your blood tests. Neither National Diagnostics, Inc or Life Extension will be liable for any acts or omissions of the physician, the testing laboratory, or their agents or employees.