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Iodine : Creatinine


Iodine is an essential trace element, important for healthy thyroid function, required to produce T3 and T4 thyroid hormones. Whether it is determining how fast your heart beats or how quickly your intestines process your food, thyroid hormones control the speed at which your body cells work.

Creatinine is a chemical waste molecule that is generated from muscle metabolism.

Urine iodine levels are quick to change following from an intake of iodine in the diet. Measuring the iodine/creatinine ratio is a better indication of iodine levels in the body as this measure is less prone to interference from dietary iodine intake.

What might a low result mean?

Low levels of dietary iodine reduce the production of T3 and T4 thyroid hormones. An iodine deficiency in the body affects the functioning of the thyroid gland. An underactive thyroid gland does not produce enough of the hormones thyroxine (T4) and triiodothyronine (T3). Low thyroid hormone levels ultimately slow down the body’s metabolism. An iodine deficiency can also cause a thyroid swelling (a goitre).

What might a high result mean?

Elevated levels of iodine can cause you to develop a goitre, which is when a part of the thyroid gland become enlarged. Excessive levels can also upset your digestive tract, causing burning in the mouth, vomiting and abdominal pain.