Thyroid Function Control
Understand how your thyroid is being regulated and whether your hormone levels are out of balance.
BIOMARKERS INCLUDED
TSH
Thyroid Blood Test
£50.00
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The Biosensitive® Thyroid Blood Test helps you understand how your thyroid function is influencing your energy, metabolism, mood, and overall wellbeing. This clinical test detects signs of an underactive or overactive thyroid, which can contribute to fatigue, weight changes, low mood, or difficulty concentrating. Designed for accuracy and clarity, your results are reviewed by our clinical team, giving you professional interpretation and guidance to help you restore balance, improve energy, and take control of your long-term thyroid health.
Shipping & Returns
All items are typically dispatched within 24 hours. 30-day return for unopened and unused product tests and kits.
Biomarkers
Which biomarkers are tested?
Click on each biomarker to see what it does and how it can influence your health.
Biomarkers
Biomarkers
TSH (Thyroid Stimulating Hormone)
TSH is the main hormone used to assess thyroid function. It’s released by the pituitary gland and tells the thyroid how much hormone to produce. High TSH can indicate an underactive thyroid (hypothyroidism), while low TSH may suggest an overactive thyroid (hyperthyroidism). It’s the first and most important marker for identifying thyroid imbalance.
Biomarkers
Free T4 (Free Thyroxine)
Free T4 is the major hormone produced by the thyroid gland. It represents the amount of circulating thyroid hormone available for the body to use. Low levels typically point toward an underactive thyroid, while high levels may indicate overactivity. This marker helps confirm whether the thyroid is producing enough hormone.
Biomarkers
Free T3 (Free Triiodothyronine)
Free T3 is the most active thyroid hormone and directly affects metabolism, energy production, body temperature, and brain function. It helps determine how well your body converts T4 into its active form.
Why These Biomarkers Matter To You
Understand why taking this test is important to you.
Hormone Production
See how much thyroid hormone your gland is producing and whether levels are consistent with healthy thyroid function.
BIOMARKERS INCLUDED
Free T4
Active Metabolic Hormone
Measure the hormone that drives your metabolism, energy levels, temperature regulation, and mood.
BIOMARKERS INCLUDED
Free T3
Complete Thyroid Insight
Combine all three markers to detect underactive or overactive thyroid function and uncover the cause of symptoms.
BIOMARKERS INCLUDED
TSH, Free T4, Free T3
Biosensitive blood tests
How it works
A simple three-step process to get clinically led insights into your health.
Step 1
Order your test
Order your Thyroid Test kit and we will send your kit to you the following day.
Step 2
Provide your blood sample
This test can be done via a finger prick, your kit will include easy to read instructions on how to complete this.
Step 3
Your results
Once your sample is sent back to us using the prepaid envelope in your test kit, we will produce your results within 3-5 days. You will be provided with a doctors report based on your results.
FAQ – Thyroid Blood Test
If you have any other questions please reach out to us directly.
1. What does this Thyroid Blood Test measure?
This test measures TSH, Free T4, and Free T3, the three key hormones that show how well your thyroid is functioning. Together, they help detect underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid conditions.
2. Why should I check my thyroid levels?
Your thyroid controls metabolism, energy, mood, weight, and temperature regulation. Imbalances can cause symptoms such as fatigue, weight changes, anxiety, hair loss, low mood, or brain fog. Testing helps identify whether these symptoms are linked to thyroid function.
3. What’s the difference between TSH, Free T4, and Free T3?
- TSH shows how your thyroid is being controlled by the brain.
- Free T4 reflects how much hormone your thyroid is producing.
- Free T3 is the active hormone that drives metabolism and energy.
Testing all three gives a complete view of thyroid performance.
4. Can this test detect hypothyroidism or hyperthyroidism?
Yes. These three markers together can identify both underactive and overactive thyroid function and help explain symptoms related to each condition.
5. Who is this test suitable for?
Anyone wanting to assess their heart health, especially if they have a family history of heart disease, high cholesterol, high blood pressure, diabetes, or weight-related concerns. It’s also ideal for monitoring lifestyle changes or treatment progress.
6. How do I collect the blood sample?
A finger prick blood collection sample. You will be sent a kit with easy to follow instructions.
7. How long do results take?
Results are typically ready within 2–5 working days once we receive your sample. You will be notified as soon as your report is uploaded.
8. Who is this test suitable for?
Anyone experiencing symptoms such as fatigue, low energy, weight gain or loss, mood changes, cold intolerance, anxiety, or hair thinning, as well as individuals with a family history of thyroid disease or autoimmune conditions.
