Private blood test, Chiswick W4
Thyroid blood test in Chiswick
Full thyroid function with antibodies: TSH, free T3, free T4, anti-TPO and anti-thyroglobulin. Analysed by Randox and explained to you.
£57Price
5Markers
NoFasting
DaysResults
What the test measures
The thyroid sets the pace of your metabolism, energy, weight, temperature and mood. This panel measures TSH, the signal from the brain that tells the thyroid how hard to work, the thyroid hormones free T4 and free T3, and two antibodies, anti-TPO and anti-thyroglobulin, which show whether an autoimmune cause such as Hashimoto's or Graves' disease is likely.
The price includes the blood draw at our clinic, analysis at the Randox accredited laboratory (ISO/IEC 15189, UKAS Lab ID 9329) and a practitioner review of your result. No GP referral is needed.
Who it is for
- Tiredness, weight gain, feeling cold, dry skin or low mood
- Feeling wired, anxious, hot, losing weight or a racing heart
- Hair thinning or changes to your periods
- A family history of thyroid disease
- You take thyroid medication and want to check your levels
What your result means
A high TSH with low free T4 usually points to an underactive thyroid, and a low TSH with raised free T4 or T3 to an overactive one. A mildly raised TSH with normal T4 is called subclinical hypothyroidism and is often rechecked before any decision. Raised antibodies suggest an autoimmune thyroid condition, even when hormone levels are still normal. Your practitioner explains your pattern and refers you to your GP where treatment may be needed.
Preparing for your test
No fasting is needed. If you take levothyroxine, have the test before your daily dose and tell us when you last took it. Stop high-dose biotin supplements for two days beforehand, as biotin can interfere with thyroid tests.
Read more: Underactive thyroid symptoms
Health checks that include it
If you have more than one question, a health check often gives better value than single tests.
Questions
How much is a private thyroid blood test?
A full thyroid panel with antibodies costs £57 at Omnia in Chiswick, including the blood draw, Randox laboratory analysis and a practitioner review.
Do I need to fast for a thyroid test?
No. Thyroid tests do not need fasting, although testing at a similar time of day each time makes results easier to compare.
Why test thyroid antibodies?
Antibodies show whether an autoimmune condition is affecting the thyroid, which is the most common cause of thyroid problems in the UK and can be present before hormone levels change.
Which health checks include thyroid?
Tired All The Time, Randox Everyman, Randox Everywoman and Randox Signature include the full thyroid panel with antibodies.
Book your thyroid blood test in Chiswick
Omnia Lifestyle, 8-9 Bedford Corner, The Avenue, Chiswick, London W4 1LZ. Two minutes from Turnham Green station, with buses 94, E3 and 272 nearby. Limited parking on request when you book.
These tests do not replace care from your GP. If you have worsening symptoms, unexplained weight loss, bleeding or severe pain, please see a doctor first.
Find us
Omnia Lifestyle
8-9 Bedford Corner, The Avenue
Chiswick, London W4 1LZ
A few minutes’ walk from Turnham Green station on the District line.
Copyright © Omnia Lifestyle Limited 2026
8-9, Bedford Corner, W4 1LZ