Thyroid Check 3

Thyroid stimulating hormone (TSH), free T4 (FT4) and free T3 (FT3)

Thyroid Check 3

This private blood analysis for Thyroid Check 3 is accessible at all thirty one Spire hospitals around the UK. This test was previously known as the “Advanced Thyroid Test”.

The test includes thyroid stimulating hormone (TSH), free T4 (FT4) and free T3 (FT3) as well as Thyroid Peroxidase Antibodies.

Why you may need to take this test –

  • You are taking medication for Thyroid related conditions and you need to check your hormone levels regularlary.
  • You may be experiencing symptoms which may be linked to a condition relating to a overactive or underactive thyroid.

We proudly donate charitable donations to the Thyroid UK Charity and the Thyroid Patient Advocacy service, which are both fantastic resources for those that are interested in their thyroid function.

Please visit Thyroid UK to find out more information if you wish to find out more information on Thyroid conditions.

The TSH (thyroid stimulating hormone) is a hormone manufactured in the pituitary gland (found in the brain). It s role is to stimulate thyroxine production in the thyroid gland (found in the neck). A high level within a health screening is associated with an underactive thyroid gland (hypothyroidism) and a low level is found if the thyroid gland is over-active (hyperthyroidism). Changes in the TSH level alone can indicate underlying thyroid problems even if the thyroxine levels are normal.

FT4 (free thyroxine) is the active form of thyroxine, released from the thyroid gland in the neck. Its role is to control metabolism – release of energy from all cells of the body. A lack of thyroxine leads to, for example, tiredness and weight gain, whereas an excess will lead to weight loss, rapid heart rate and anxiety. It is generally believed that this level (FT4) is the most reliable indicator of thyroid status – ie whether the gland is over-active (hyperthyroidism) or underactive (hypothyroidism).

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