• Thyroid Function - Diagnosis and Monitoring Blood Test London Medical Laboratory
  • Thyroid Function - Diagnosis and Monitoring Blood Test London Medical Laboratory
  • Liver Function Blood Test Epsom Blood Tests
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Thyroid Function - Diagnosis and Monitoring Blood Test

Thyroid Function - Diagnosis and Monitoring Blood Test

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Description

Check Your Thyroid Health with our Thyroid Function - Diagnosis and Monitoring Blood Test

The Thyroid Function - Diagnosis and Monitoring Blood Test is designed to measure key thyroid hormones, including Thyroid Stimulating Hormone (TSH) and Free T4. These hormones play a crucial role in regulating your metabolism, energy levels, and overall health. Imbalances can lead to a range of symptoms, from fatigue and weight gain to thinning hair and depression.

Why Choose the Thyroid Function Test?

Did you know that low thyroid affects 1 in 20 people in the UK, often causing symptoms like fatigue, weight gain, thinning hair, and depression? If you're experiencing any of these signs, this test can help diagnose thyroid imbalances early, allowing for timely treatment and management.

The Thyroid Function - Diagnosis and Monitoring test helps identify whether your thyroid is underactive (hypothyroidism) or overactive (hyperthyroidism) by measuring your TSH and Free T4 levels.

What’s Included in the Thyroid Function Test?

This test focuses on two key thyroid markers:

  • Thyroid Stimulating Hormone (TSH): A hormone produced by the pituitary gland that regulates the thyroid.
  • Free T4: The main form of thyroid hormone, responsible for regulating metabolism and energy.

These markers provide valuable insight into your thyroid health and help guide any necessary treatment or lifestyle changes.

Accurate Results with Expert Testing

Our experienced phlebotomists ensure a quick and accurate blood sample collection, providing you with reliable results to help monitor and manage your thyroid health. Book your Thyroid Function - Diagnosis and Monitoring test today and take the first step toward better health and wellness.

What's included in this test

Thyroid (2 Biomarkers)

Free T4 (thyroxine)
Thyroid Stimulating Hormone

How it works

1. Book your test
Select the test you need and schedule an in-clinic appointment at a time that suits you. No need to pay in advance.

2. Visit us in clinic
Come to our clinic for a quick, professional sample collection with one of our experienced phlebotomists. These appointments usually take no more than 10 minutes.

3. Get your results
Receive your secure, detailed results complete with comments from one of our doctors. Results go directly to you via email. You will receive a code via SMS to access your results.

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What the Thyroid Function Blood Test Checks

Checking your thyroid function helps you understand if your thyroid gland is working properly, which can affect your energy, metabolism, and mood. Our Thyroid Function Blood Test measures TSH and Free T4 levels to detect underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid conditions early.

You may benefit from this test if you’ve noticed:

  • Unexplained tiredness or weight changes
  • Feeling unusually cold or hot
  • Hair loss or mood changes

Get fast, doctor-reviewed results from our Epsom clinic, usually available the next day.

Why Book With Us?

  • Unlimited Free Rescheduling

    Life happens, we make it stress-free

  • Free Cancellations

    Cancel anytime, no hidden fees

  • Trusted locally

    300+ ★★★★★ reviews from people in Epsom

Understand Your Results with Confidence

Doctor-Reviewed Blood Test Results, Explained Clearly

We believe your results should make sense. That’s why:

  • Results are presented in clear visuals, not confusing numbers
  • Our doctors explain what each result means in plain English
  • Anything unusual is highlighted with comments and next steps
  • So you get clarity, confidence, and a plan for your health
Book My Test

What TSH and Free T4 Tell You About Your Thyroid

Your thyroid results help show whether your body is keeping the right hormonal balance. The two markers (TSH and Free T4) work together, so understanding both gives a more complete picture.

If TSH is raised and Free T4 is low, it usually points to an underactive thyroid (hypothyroidism), where your thyroid isn’t producing enough hormones and your pituitary gland is trying to compensate by releasing more TSH.

If TSH is low and Free T4 is high, it often suggests an overactive thyroid (hyperthyroidism), where the gland is producing too much hormone and the brain is trying to slow it down.

Sometimes both results fall within range but symptoms persist. This can indicate a mild or developing imbalance that’s worth monitoring over time.

Your report will explain your specific results and highlight whether any further tests or follow-up are recommended.

Book My Thyroid Function Blood Test

Why Choose In-Clinic Testing?

  • Collected by Trained Professionals

    Every sample is taken by an experienced phlebotomist using sterile, clinical techniques. It’s quick, safe, and virtually painless, ensuring your results aren’t compromised by poor collection or contamination.

  • High-Quality Samples

    Venous blood samples collected in-clinic provide the volume and purity required for full laboratory analysis. Unlike home finger-prick kits, these samples deliver far more accurate and consistent results across all markers.

  • Fast Results

    Your sample goes straight to our laboratory the same day with our team of couriers. With in-clinic testing there are no postal delays.

Frequently Asked Questions

Do I need to fast before my thyroid blood test?

No fasting is needed for this test. You can eat and drink normally before your appointment. Just stay hydrated so your blood draw is easier.

How long does a blood test take?

The sample collection usually takes 5-10 minutes.

How long will my results take?

Most thyroid results are available the next working day after your sample is taken. You’ll receive a doctor-reviewed report by secure email with a clear explanation.

How will I receive my results?

A link to your results will be emailed to you securely. You'll also receive an sms with the password you need to access your results. From here you can download, print or share your results.

Will someone explain my results to me?

We make great effort to ensure you'll be able to understand your results. Your results come as a graphical report with clear, easy-to-understand explanations. One of our doctors will also provide analysis of your results to ensure you get the most out of them.

Can I take this test if I’m on thyroid medication?

Yes. In fact, this test is often used to monitor your medication levels. Just take your medicine as normal unless your doctor has advised otherwise.

What’s the difference between this test and a full thyroid profile?

This Thyroid Function Blood Test checks TSH and Free T4, which cover the main markers of thyroid health. A full profile typically adds Free T3 and thyroid antibodies for a deeper look at thyroid activity and autoimmune causes.

You can see all our Thyroid tests here

How often should I check my thyroid levels?

If you’re on treatment, most people test every 3–6 months until stable, then once a year. If you’re not on medication but have symptoms, testing once or twice a year can help spot early changes.

Can I share my results with my GP?

Yes. Your results come in a professional, shareable PDF that most GPs can upload directly into your medical record.

Will this test diagnose my thyroid condition?

It can confirm whether your thyroid is underactive or overactive, but diagnosis and treatment should always be reviewed with a healthcare professional. Our doctors will help you understand your result but if your results fall outside normal or expected ranges, it would be wise to share them with your regular GP to discuss treatment.

Is the test suitable for men and women?

Yes. Thyroid conditions affect both men and women, though they’re more common in women. The same test applies to everyone.

Where is the blood test done?

All samples are taken in-clinic at our Epsom location by trained professionals, ensuring accurate results and a quick turnaround.

You can see our location on the map further down the page.

Where to Find Us

Visit our Epsom clinic for fast, professional blood testing — convenient for Epsom, Ewell, Stoneleigh, Sutton, Banstead, and Worcester Park.

Clinic: London Medical Laboratory Epsom (operated by Epsom Blood Tests)
Address: 45 Stoneleigh Broadway, Epsom, KT17 2JE
Phone: 020 7183 8414
Email: info@epsombloodtests.com
Opening Hours:
Mon–Thu: 9:00 am – 5:00 pm  |  Fri: 9:00 am – 3:00 pm  |  Sat: 9:00 am – 2:00 pm
Free rescheduling & cancellations. Pay in clinic after your blood draw.
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