Thyroid blood work normal but Uptake showed hyperthyroidism. Is this and if so how can it be treated when you rely on to show the medicine is regulating it?
Yes, it is possible to have normal thyroid blood work but an uptake scan showing hyperthyroidism. This can occur in several situations:
1. Subclinical Hyperthyroidism: In some cases, individuals may have slightly elevated thyroid hormone levels that are not high enough to be detected by routine blood tests but are still sufficient to cause symptoms of hyperthyroidism. This is known as subclinical hyperthyroidism. An uptake scan can help identify this condition by showing increased thyroid activity.
2. Graves' Disease: Graves' disease is an autoimmune condition characterized by overactive thyroid function. In this condition, the thyroid gland is stimulated by antibodies, leading to the production of excessive thyroid hormones. While routine blood tests may show normal or borderline thyroid hormone levels, an uptake scan can reveal increased thyroid activity.
3. Thyroid Nodules: Thyroid nodules are abnormal growths in the thyroid gland. In some cases, these nodules can become hyperactive and produce excessive thyroid hormones, leading to symptoms of hyperthyroidism. Normal blood work results can occur if the thyroid nodule is small or not producing a significant amount of thyroid hormones. An uptake scan can identify the presence and location of hyperactive nodules, helping guide treatment decisions.
Treatment for hyperthyroidism, including cases where blood work is normal but uptake scan shows hyperthyroidism, typically involves medications to block or reduce the production of thyroid hormones. Common medications used for this purpose include methimazole, propylthiouracil, and beta-blockers. Radioactive iodine therapy or surgery may also be considered in certain situations.
It is important to consult with a healthcare provider for appropriate evaluation, diagnosis, and management of hyperthyroidism based on the individual's specific circumstances and test results.