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Get a thorough assessment of your thyroid health with this advanced test, which includes antibody analysis. Ideal for exploring thyroid-related symptoms or monitoring autoimmune thyroid conditions.
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Results available within 7-10 working days
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Flexible testing options
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Personalised doctor's report
- Free delivery
What's included in the test?
Autoimmunity
Thyroglobulin Antibodies
This test detects antibodies against thyroglobulin, a protein specific to the thyroid gland. Normally, thyroglobulin does not enter the bloodstream, but if the thyroid is inflamed or under immune system attack, it may be released, allowing antibodies to be detected. Most thyroid disorders result from autoimmune conditions, where the immune system mistakenly targets the thyroid. This can lead to excessive thyroid hormone production, as seen in Graves' disease, or reduced hormone levels due to gradual destruction of thyroid cells, as in Hashimoto's thyroiditis.
Thyroid Peroxidase (TPO) Antibodies
Thyroid peroxidase (TPO) is an enzyme essential for producing thyroid hormones. This test checks for TPO antibodies, which are frequently elevated in autoimmune thyroid conditions and sometimes present in individuals without symptoms.
Thyroid Hormones
TSH (Thyroid Stimulating Hormone)
TSH is produced by the pituitary gland to regulate thyroid hormone levels. When thyroid hormone levels in the blood are low, TSH increases to stimulate hormone production. Conversely, if thyroid hormone levels are too high, TSH production decreases to slow down hormone synthesis. Abnormal TSH levels often indicate an issue with the thyroid gland, such as over- or underproduction of hormones, though pituitary disorders can also affect TSH levels.
Free T3 (Triiodothyronine)
T3 is the more active thyroid hormone responsible for regulating metabolism. Most T3 in the blood is bound to proteins, but this test measures the free (unbound) T3 that is available for use by the body.
Free T4 (Thyroxine)
T4 is one of the main thyroid hormones that influences metabolism. Most T4 is bound to carrier proteins, but only the free (unbound) T4 is biologically active, which is what this test measures. Free T4 is less active than T3 and must convert into T3 when required by the body.
How to prepare for your test
Follow these guidelines to ensure accurate results:
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Collect your sample between 6am and 10am.
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Wait at least 24 hours after taking any vitamin or mineral supplements before collecting your sample.
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Avoid biotin supplements for two days before testing (consult your doctor if biotin is prescribed).
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If you take thyroxine, continue your medication as usual, before or after the test.
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If you take desiccated thyroid extract (DTE) or liothyronine, collect your sample before taking your medication.
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If you take amiodarone or lithium, let us know in your supporting information, as these can affect thyroid function results.