Thyroid Function (TSH & Free T4)
If you’ve been feeling unusually tired, gaining or losing weight unexpectedly, experiencing changes in mood, hair loss, or struggling with temperature regulation, your thyroid could be playing a role. Our Thyroid Function Blood Test measures two key markers — TSH (thyroid stimulating hormone) and Free T4 (thyroxine) — to give a clear picture of how well your thyroid is working.
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No GP referral needed · Same-day results · Doctor-reviewed report
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No referral needed · Doctor-reviewed · Same-day results
Health Insights, Made Personal
Understand what your results mean with a personalised doctor's report. Gain expert insights and clear next steps tailored to your health journey.
- Practical, easy-to-follow advice from your physician
- Personalised health recommendations based on your results
- Doctor-signed report delivered the same day
Know What You're Taking
Essential information about your test
Understanding Thyroid Function
This test measures two hormones — TSH and Free T4 — to assess how well your thyroid is working. The thyroid gland plays a major role in regulating metabolism, energy, and mood. Imbalances can cause symptoms ranging from fatigue and weight changes to anxiety and palpitations.