Frequently bought with this test
Thyroid Function Test
If you’ve been feeling unusually tired, gaining or losing weight unexpectedly, experiencing mood changes, hair loss, or struggling with temperature regulation, your thyroid could be the cause. This test checks two key hormones — TSH and Free T4 — to give a clear picture of your thyroid health.
4/5
£49
2 BIOMARKERS
Frequently bought with this test
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Essential information about your test
Understanding Thyroid Function
The thyroid is a small gland in your neck with a big impact on energy, metabolism, and mood. This test measures two important markers — TSH and Free T4 — to help identify if your thyroid is underactive, overactive, or functioning normally.
What we measure:
Produced by the pituitary gland, TSH regulates how much hormone your thyroid makes.
- High TSH often indicates an underactive thyroid (hypothyroidism)
- Low TSH may suggest an overactive thyroid (hyperthyroidism)
- Key control signal for thyroid function
The main hormone released by the thyroid gland, controlling metabolism and energy use.
- Helps convert food into energy
- Measured with TSH to confirm thyroid balance
- Imbalances can affect weight, energy, and mood