Symptoms of iodine deficiency, including fatigue, weight gain, and thyroid enlargement (goiter), prompt the use of the iodine test. This clinical tool assesses iodine levels crucial for thyroid function. Excessive iodine can lead to symptoms like nausea and thyroid dysfunction. The test aids in diagnosing and managing iodine-related conditions, guiding interventions such as dietary changes or supplementation. Regular monitoring ensures optimal thyroid health, preventing complications associated with both deficient and excess iodine levels.