Is this for me?
The Thyroid Function Panel looks at the core hormones involved in how your thyroid communicates with the rest of your body. By measuring TSH, Free T4 and Free T3, it helps assess whether your thyroid may be underactive, overactive or otherwise not functioning in the expected balance.
This panel is often considered when people are experiencing symptoms such as fatigue, cold intolerance, unexplained weight change, hair thinning, mood changes or shifts in heart rate. Thyroid hormones influence metabolism widely, so results are best understood alongside symptoms and broader health context.
Testing for
FAQs
Common reasons include persistent tiredness, unexplained weight change, hair thinning, feeling unusually cold or hot, changes in bowel habits, palpitations or mood shifts.
TSH gives the signalling picture, while Free T4 and Free T3 help show the actual hormone levels available. Looking at them together gives a more complete view.
Not always. They are very useful, but some situations may require antibody testing, repeat testing or further medical evaluation depending on symptoms and results.
Want results that go further?
With Definitiv, your blood test results are used to build a personalised IV programme. We identify exactly what your body needs, recommend the right treatment, and monitor your progress over time.