Sample results
Goiter is an abnormal enlargement of the thyroid gland located at the base of the neck. It is caused by iodine deficiency, autoimmune conditions like Hashimoto's thyroiditis and Graves' disease, or thyroid dysfunction affecting hormone production. The Thyroxine (T4) Total test is the most important test for diagnosis because it measures thyroid hormone levels to determine if the enlarged gland is functioning properly.
Goiter is caused by iodine deficiency, autoimmune thyroid diseases, and thyroid dysfunction. The most common cause worldwide is insufficient dietary iodine, which forces the thyroid gland to enlarge as it attempts to capture more iodine to produce thyroid hormones. In regions with adequate iodine intake, autoimmune conditions like Hashimoto's thyroiditis and Graves' disease are primary causes, along with thyroid nodules, inflammation, and certain medications that interfere with thyroid hormone production.
The Thyroxine (T4) Total test is the most important test for goiter because it measures the total amount of T4 hormone your thyroid produces, revealing whether your enlarged gland is overactive, underactive, or functioning normally. This helps determine the underlying cause and guides treatment decisions. Additional essential tests include the Iodine, Serum/Plasma test to check if dietary iodine deficiency or excess is contributing to the enlargement, and the Thyroglobulin test to assess thyroid tissue activity and health. Together, these blood tests provide a comprehensive picture of why your thyroid has enlarged and how well it's functioning.
You should get tested if you notice visible swelling at the base of your neck, experience difficulty swallowing or breathing, or feel tightness in your throat area. Testing is also important if you have unexplained weight changes, persistent fatigue, rapid heartbeat, or sensitivity to heat or cold, as these may indicate thyroid dysfunction accompanying the goiter. Additionally, if you have a family history of thyroid disease or live in an area with known iodine deficiency, early testing can help catch problems before they become more serious.
What this means
Your Total T4 levels are slightly below the optimal range, which may indicate your thyroid is not producing quite enough hormone. While this is mild, it could contribute to symptoms like fatigue, difficulty losing weight, feeling cold, or low energy throughout the day.
Recommended actions
Ensure adequate iodine intake through seafood, dairy, or iodized salt
Include selenium-rich foods like Brazil nuts, eggs, and sunflower seeds
Prioritize 7-9 hours of quality sleep and manage stress levels
Retest in 8-12 weeks to monitor thyroid function trends
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Sample results
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