The Iodine Serum, Plasma test measures the level of iodine in your blood, an essential element for thyroid hormone production. Adequate iodine levels are crucial for maintaining optimal thyroid function and overall health. Deficiency or excess iodine can lead to thyroid disorders, including hypothyroidism or hyperthyroidism. This test is particularly important for individuals with dietary concerns or those experiencing symptoms of thyroid dysfunction. By understanding your iodine levels, you can take necessary steps to ensure proper thyroid health and metabolic function.