hair loss, fatigue, pre surgery, blood draw, clinic

Advanced Thyroid Function blood test

Name: Advanced Thyroid Function blood test
Brand: Clinilabs
SKU: ADVTFT
Price: 89.0 GBP
Availability: InStock

★★★★★ (4.9/5)

£89.00

~~£119.00~~

10 Biomarkers

Our Advanced Thyroid Function (TFT) blood test measures TSH, Free T3, and Free T4 to provide a clear picture of thyroid health.

The Advanced Thyroid Function Blood Test (TFT) evaluates key thyroid hormones including TSH, Free T3, and Free T4 to assess gland function and metabolism. This TFT test helps identify conditions such as hypothyroidism, hyperthyroidism, and other thyroid imbalances. All samples are processed in accredited laboratories to ensure fast, accurate, and dependable results. It is an ideal choice for anyone in London seeking a comprehensive assessment of thyroid health.

How do you want to take your sample?

Book a venous draw at a clinic Venous

Visit our Fitzrovia clinic for a professional venous blood draw with same-day appointments available.

+£30.00

Appointment Required
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Professional Blood Draw
Performed by certified phlebotomists

UKAS Accredited

Why Clinilabs?

Quick and accurate results

We run our own UKAS and CQC accredited laboratory and participate in 30+ external quality assurance schemes. This means we get you results you can rely on, fast.

High-quality, convenient service

With Clinilabs, you can typically book an appointment and have your results within the same day. No more waiting for weeks or months.

Early detection of health issues

Our seamless, accurate health checks allow you to Identify potential health concerns and act on them before they become serious problems.

Access to doctors

Elevate your health understanding with our comprehensive smart reports. Track, monitor and improve your health over time.

Private Tests, Fast Results

At Clinilabs, we believe healthcare should be simple, accessible, and confidential. Our private blood tests give you direct access to trusted medical insights without the need for a GP referral. With fast turnaround times, clear results, and expert support, you can take control of your health and make informed decisions with confidence.

View All Tests

What’s included in this test

Inflammation

C Reactive Protein (CRP)

CRP is a marker of inflammation in the body. Elevated CRP may indicate infection, autoimmune disorders, or increased cardiovascular risk.

Vitamins

Vitamin B12

Vitamin B12 is vital for energy production and nerve health. Deficiency can lead to fatigue, memory problems, and anaemia.

Minerals

Folate

Folate is a B-vitamin essential for DNA synthesis and red blood cell production. It's especially important during pregnancy and for individuals with fatigue or dietary deficiencies.

Iron markers

Ferritin

Ferritin reflects the body's stored iron. It's a more reliable marker for iron deficiency than serum iron, especially in chronic conditions.

Vitamins

Vitamin D (25-OH)

Vitamin D (25-OH) supports bone health, immunity, and mood regulation. It's one of the most common deficiencies in the UK and worth checking routinely.

Thyroid health

Free T4

Free T4 gives insight into the level of unbound thyroxine hormone. It’s key for diagnosing thyroid conditions when TSH alone is inconclusive.

Free T3

Free T3 is the active form of triiodothyronine, a thyroid hormone. It’s useful in identifying hyperthyroidism or ineffective thyroid conversion.

Thyroglobulin Antibody

Thyroglobulin Antibody testing helps diagnose autoimmune thyroid disorders and monitor patients post-thyroid cancer treatment.

Thyroid peroxidaise (TPO) antibodies

TPO antibodies indicate autoimmune thyroid disease such as Hashimoto’s or Graves’. Useful in unexplained fatigue, weight gain, or thyroid symptoms.

TSH

TSH controls the thyroid gland’s hormone production. It’s the most common marker for identifying thyroid dysfunction, such as hypothyroidism.

FAQs

What is thyroid disease and who is at risk?

It is estimated that around 1 in 20 people may have a thyroid disorder. Several conditions can impact the normal function of the thyroid, including an underactive thyroid (hypothyroidism), an overactive thyroid (hyperthyroidism), autoimmune thyroid disease, thyroid swelling (goitre), nodules, or thyroid cancer. While anyone can develop a thyroid disorder, certain factors increase the risk. These include being female, being over the age of 50, or having a family history of thyroid problems.

Why check for vitamins and minerals in thyroid profile?

Key vitamins and minerals that support thyroid function and may mimic the symptoms of an underactive thyroid when they are low. These tests include: vitamin D,vitamin B12, folate (vitamin B9) and ferritin – a marker of iron storage. To provide further insight, we also measure C-reactive protein (CRP), an inflammation marker. This helps interpret your ferritin levels more accurately and offers an indication of whether an autoimmune condition may be contributing to inflammation in your body.

What does a blood test for thyroid function show?

Many standard thyroid tests only measure TSH and FT4, which may not reveal issues with converting FT4 into the more biologically active FT3. It is possible to have normal TSH and FT4 levels but still experience symptoms of an underactive thyroid if FT3 levels are low. Measuring FT3 is especially useful if you are taking T3-containing medication, such as liothyronine or natural desiccated thyroid (NDT). TSH plays a key role by stimulating the thyroid gland to produce thyroid hormones, primarily T4. Elevated TSH levels can indicate that your thyroid is not producing enough T4 to meet your body's needs. However, testing TSH alone does not provide a complete picture of thyroid function, which is why we also measure FT4 and FT3 for a more accurate assessment.

Why should I test my thyroid?

If you're experiencing symptoms like unexplained changes in weight, energy levels, mood, skin, or hair, your thyroid could be a contributing factor. The thyroid plays a crucial role in regulating your metabolism, body temperature, and energy production, so even slight imbalances can affect how you feel day to day. A thyroid blood test can help determine whether your thyroid is functioning properly by measuring key hormones such as TSH, FT4, and FT3. Identifying an underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid early can make a significant difference in managing your symptoms and improving your overall well-being.

What is the thyroid?

The thyroid is a small, butterfly-shaped gland located at the front of the neck. It produces hormones that are essential for regulating your metabolism, energy levels, mood, and more. Thyroid issues are especially common in women and can affect menstrual cycles, fertility, weight, and emotional wellbeing. When the thyroid produces too much hormone, it causes an overactive thyroid (hyperthyroidism). When it produces too little, it leads to an underactive thyroid (hypothyroidism). Both conditions can significantly impact overall health, particularly during key life stages such as pregnancy, postpartum, and menopause.

Why is thyroid function tested as part of a female hormone panel?

Many symptoms associated with hormonal changes due to ageing, such as fatigue, weight and mood changes can closely resemble those of an underactive thyroid. Thyroid disorders are more common in women and are often caused by autoimmune conditions, where the body's immune system mistakenly attacks the thyroid gland. Our test helps determine whether your thyroid is functioning normally and whether an autoimmune condition may be contributing to your symptoms. Even when thyroid hormone levels are within the normal range, elevated thyroid antibodies have been linked to a higher risk of miscarriage. If left untreated, thyroid disorders can also increase health risks for both the mother and the baby during pregnancy.

What autoimmune diseases affect the thyroid?

The two main autoimmune conditions that affect the thyroid are Hashimoto's thyroiditis, which leads to an underactive thyroid (hypothyroidism), and Graves' disease, which causes an overactive thyroid (hyperthyroidism). While there is currently no cure for either condition, both can be effectively managed with the right treatment plan — making proper testing essential. To reach a diagnosis, your doctor will consider your symptoms along with the results of thyroid blood tests to determine whether a thyroid disorder is present.

Advanced Thyroid Function blood test