Thyroid Full Profile
This comprehensive thyroid profile assesses hormone levels and thyroid antibodies in one test. It helps identify underactive, overactive, and autoimmune thyroid conditions.
Turnaround time
2 days
Biomarkers count
6
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Details about Thyroid Full Profile
What is the Thyroid Full Profile?
The Thyroid Full Profile is an in-depth blood test that evaluates both thyroid hormone production and autoimmune activity affecting the thyroid gland. It provides a complete picture of how the thyroid is functioning and whether the immune system is involved.
This profile includes Thyroxine (T4), Free T3, Free T4, Thyroid Stimulating Hormone (TSH), Antithyroglobulin Antibodies (TgAb), and Thyroid Peroxidase Antibodies (TPOAb). Together, these markers assess hormone output, hormone availability, pituitary signalling, and autoimmune thyroid disease.
It is particularly useful when symptoms persist despite normal basic thyroid tests or when autoimmune thyroid disease is suspected.
Why do I need a Thyroid Full Profile?
Thyroid disorders can present with broad, non-specific symptoms and may be missed by single-marker testing. Autoimmune thyroid disease can also be present before hormone levels become abnormal.
You may benefit from this test if you experience:
- Persistent fatigue or low energy
- Weight gain or unexplained weight loss
- Cold or heat intolerance
- Hair thinning or hair loss
- Anxiety, low mood, or brain fog
- Palpitations or tremors
- Irregular menstrual cycles or fertility concerns
- Family history of thyroid or autoimmune disease
- Fluctuating or borderline thyroid results
This profile helps distinguish functional thyroid problems from immune-related thyroid disease and supports clearer clinical interpretation.
Benefits of the test
- Complete thyroid assessment
Measures pituitary signalling, hormone levels, and immune antibodies together. - Detects autoimmune thyroid disease
Identifies Hashimoto’s- and Graves’-related antibody activity. - Explains symptoms with normal TSH
Free hormone and antibody testing adds critical context. - Identifies early or subclinical disease
Antibodies may appear before hormone disruption. - Supports fertility and pregnancy planning
Thyroid balance is crucial for reproductive health. - Useful for long-term monitoring
Tracks hormonal and immune trends over time. - Improves diagnostic confidence
Reduces reliance on single-marker interpretation. - Single blood draw
Comprehensive results from one sample.
Step-by-step: How we offer testing
Clinic-based testing (UK-wide)
- Choose your nearest UK clinic
- Attend your appointment
- A clinician draws a blood sample
- Sample is sent to the laboratory
- Results are issued once analysis is complete
Home or hotel visit (+£60, UK-wide)
- Book a mobile phlebotomist
- Blood sample taken at your home or hotel
- No need to attend a clinic
- Sample securely transported to the laboratory
Your results explained
Low thyroid function (hypothyroid pattern)
- High TSH with low Free T4 and/or Free T3
- UK standards (typical):
- TSH: >4.5 mIU/L
- Free T4: <10 pmol/L
- May be associated with fatigue, weight gain, cold intolerance
Normal thyroid function (euthyroid)
- Balanced TSH, Free T4, and Free T3
- UK standards (typical):
- TSH: 0.4–4.0 mIU/L
- Free T4: 10–22 pmol/L
- Free T3: 3.1–6.8 pmol/L
- Suggests normal hormone production and regulation
High thyroid function (hyperthyroid pattern)
- Low TSH with elevated Free T4 and/or Free T3
- UK standards (typical):
- TSH: <0.1 mIU/L
- Free T4: >22 pmol/L
- May be associated with palpitations, anxiety, heat intolerance
Autoimmune activity present
- Elevated TPOAb and/or TgAb
- UK standards (typical):
- TPOAb: >35 IU/mL
- TgAb: >115 IU/mL
- Indicates immune-mediated thyroid disease even if hormones are normal
Results should always be interpreted together, not in isolation.
How It Works
Simple steps to get your results
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.