Extensive Thyroid Panel

6-marker comprehensive thyroid panel including TSH, T3, T4, and three thyroid antibodies for complete thyroid health assessment.

The Extensive Thyroid Panel provides the most thorough thyroid assessment available from Express Pathology, going far beyond the TSH-only test that most GPs use for initial screening. Thyroid disorders affect an estimated 1 in 8 Australians, with women 5-8 times more likely to be affected than men. TSH (thyroid-stimulating hormone) from the pituitary gland signals the thyroid to produce hormones. T3 (triiodothyronine) is the active thyroid hormone that cells actually use, while T4 (thyroxine) is the storage form that converts to T3 in tissues. Measuring all three reveals whether the issue is at the pituitary level (abnormal TSH), the thyroid level (low T4), or the conversion level (low T3 with normal T4 — common in chronic stress, caloric restriction, and selenium deficiency). Three thyroid antibodies complete the picture: TPO antibodies and thyroglobulin antibodies are markers of Hashimoto's thyroiditis (autoimmune hypothyroidism), the most common cause of thyroid dysfunction in Australia. TSH receptor antibodies indicate Graves' disease (autoimmune hyperthyroidism). Detecting antibodies early allows monitoring and intervention before the thyroid is significantly damaged. This panel is essential for anyone with thyroid symptoms, family history of thyroid disease, or unsatisfactory results from TSH-only testing.