Thyroid Test
A private thyroid blood test that shows how your thyroid gland is working. Choose from TSH and Free T4, a fuller panel adding Free T3, or a comprehensive check that includes thyroid antibodies. Thyroid results are read as a pattern, so every one is reviewed by a GMC-registered doctor, with a secure password-protected outcome sent to your email.
By Dr Maryam Attarzadeh, GMC-registered doctor and Medical Director, KONCEPT® Medical Clinic. Last reviewed May 2026. Next review November 2026.
The thyroid is a small gland that sets the pace of your metabolism, and when it runs slow or fast it can quietly affect your energy, weight, mood, temperature and heart rate. A thyroid blood test is worth booking if you have symptoms that could fit, a family history of thyroid disease, or you are monitoring a condition you already know about. The test shows how the gland is working. A GMC-registered doctor reads the pattern and advises what it means.
Thyroid markers also sit inside our Full Blood Test and Health Check if you would like them as part of a wider review.
Pick the depth that suits you. If you are not sure, start with the Basic check and the reviewing doctor will tell you whether more is worthwhile.
Best for a first check of how your thyroid is working.
Book the Basic checkBest when symptoms and a basic result do not fully line up.
Book the Advanced checkBest for the fullest picture, autoimmune questions or a known thyroid condition.
Book the Comprehensive checkPrefer just the antibodies? A standalone Thyroid Antibody Check (TPO and Tg) is £75, £114 all-in. One £39 administration fee covers your whole visit, however many tests you book. It is charged once per visit, never per test, so combining tests in one appointment keeps the admin fee to a single charge.
The message your pituitary gland sends to tell the thyroid how hard to work. It is the usual first-line marker. A high TSH points towards an underactive thyroid, a low TSH towards an overactive one.
The main hormone the thyroid releases into the blood. Read alongside TSH, it helps show whether the gland is producing the right amount.
The active hormone your body actually uses. Most helpful when your symptoms and your TSH and T4 results do not fully match.
Thyroid peroxidase and thyroglobulin antibodies point to autoimmune thyroid disease, such as Hashimoto's or Graves'. They help explain why a thyroid is over or underactive.
Thyroid markers are interpreted together rather than against a single cut-off, because it is the combination that tells the story. The patterns below are a simple guide to what the doctor looks for. They are not a self-diagnosis, and reference ranges vary between laboratories.
Typically high TSH with low or low-normal Free T4.
Often linked to symptoms such as tiredness, weight gain, feeling cold and low mood. Hashimoto's is the most common cause in the UK.
Typically low TSH with high Free T4 or Free T3.
Often linked to palpitations, weight loss, feeling hot, restlessness or anxiety. Graves' disease is a common cause.
Raised TPO or Tg antibodies, or a subclinical pattern.
Antibodies suggest an autoimmune cause. Borderline or subclinical results often need a repeat test after a few weeks before anything is confirmed.
Online, in person, or during a GP consultation. A GMC-registered doctor reviews each request first.
An experienced practitioner takes your sample, usually 15 to 30 minutes. No fasting needed.
Processed by an accredited UK pathology laboratory to the same standards as the NHS.
Most results within 2 to 5 working days, with a clear outcome note sent securely to your email.
Thyroid symptoms are easy to put down to a busy life, which is why testing is so useful. Consider a thyroid blood test if you recognise a cluster of the following.
A few thyroid-related symptoms need urgent attention rather than a booked appointment. Seek urgent care, call NHS 111, or go to A&E if you have severe or sudden palpitations, severe breathlessness, neck swelling that makes it hard to swallow or breathe, or you feel extremely unwell. Call 999 if symptoms are severe.
A home kit can return thyroid numbers, but thyroid results live or die on interpretation, because the pattern across several markers, and what to do about a borderline result, is where the value is. Here is the side-by-side.
| Online home-kit thyroid test | KONCEPT® thyroid test | |
|---|---|---|
| Sample collection | Self-administered finger-prick at home, with the quality of the sample resting on you. | Venous draw in-clinic by an experienced practitioner, with biotin use and timing noted for accurate results. |
| Who reviews the result | An algorithm-generated PDF comparing each marker to a generic range. Doctor commentary is usually a paid extra. | A GMC-registered doctor reads the whole pattern against your symptoms. Included in the panel price. |
| Borderline results | A subclinical or borderline pattern is reported, but arranging the repeat test it often needs is left to you. | If a repeat is needed in a few weeks, the doctor says so in your outcome note and helps you arrange it. |
| Antibodies and depth | Often a fixed bundle, with limited choice over depth. | Choose Basic, Advanced or Comprehensive with antibodies, guided by the doctor to what you actually need. |
| Sharing with your NHS GP | Not offered. You would forward the PDF yourself. | With your written consent, a clinical summary is sent to your NHS GP so the result joins your NHS record. |
The NHS provides comprehensive thyroid care, and remains the right route for many patients, particularly anyone with a confirmed diagnosis or significant symptoms. KONCEPT® is designed to complement, not replace, that care, by making a fuller thyroid panel easy to access directly when you want a check on your own timing.
| Standard NHS approach | What KONCEPT® adds | |
|---|---|---|
| Booking and access | Thyroid testing is part of NHS care, arranged through your GP when indicated, subject to local availability. | A thyroid panel directly, without referral. Same-day, Saturday and out-of-hours appointments subject to availability. |
| Scope of the test | Often starts with TSH alone, with Free T4, Free T3 or antibodies added when criteria are met. | You can choose a fuller panel from the outset, including Free T3 and antibodies, guided by the doctor. |
| Time with the reviewing doctor | Appointment length varies by region, practice and clinical urgency. | A 30-minute consultation with a GMC-registered doctor is available alongside the test for anyone who wants one, with a plain-English outcome note as standard. |
| Cost | Free at the point of use within the NHS, where clinically indicated. | From £69 per test plus a single £39 administration fee per visit. The Comprehensive panel is £238 all-in. |
| Continuity with your NHS record | Tests ordered through NHS routes are added to your record automatically. | With your written consent, a clinical summary is shared with your NHS GP so the result is added to your NHS record. |
Source: thyroid assessment reflects NICE CKS: Hypothyroidism and related thyroid guidance. NHS provision varies by region and clinical context, and the NHS pathway remains appropriate for many patients. KONCEPT® encourages continued NHS GP involvement and shares clinical summaries with your NHS GP on request.
KONCEPT® Medical Clinic offers a doctor-reviewed thyroid blood test for patients across the KT and SW postcodes, without a GP referral. People book from Kingston upon Thames, Surbiton, New Malden, Wimbledon, Richmond upon Thames, Putney, Teddington, Hampton, Esher, Cobham, Walton-on-Thames, Thames Ditton and Twickenham. The clinic is at 46 to 48 Wood Street, opposite Kingston Station, two minutes from the Bentall Centre, with parking nearby. It is reachable by train from Waterloo in around 28 minutes, or by car off the A3.
Patients book this test for unexplained tiredness or weight change, to investigate an over or underactive thyroid, to check thyroid antibodies, and to monitor a known condition. It suits anyone searching for a private thyroid function test in Kingston, a TSH or Free T4 test near me, a thyroid antibody test Surrey patients can travel to, or a full thyroid panel Richmond and Surbiton patients can reach quickly. Book online or call 020 8129 1011.
Thyroid symptoms overlap with other common causes of tiredness and weight change, so patients often pair the thyroid panel with related markers or fold it into a wider review. The doctor can suggest the most useful combination at booking.
A thyroid blood test measures the hormones that show how your thyroid gland is working. The core markers are TSH, the pituitary signal that controls the thyroid, and Free T4, the main hormone the thyroid releases. Free T3, the active hormone, is added in the Advanced panel, and thyroid antibodies (TPO and Tg) are added in the Comprehensive panel to look for autoimmune causes. Every result is reviewed by a GMC-registered doctor who interprets the pattern, not just a single number.
TSH is the message your pituitary gland sends to tell the thyroid how hard to work, and it is the usual first-line marker. Free T4 is the main hormone the thyroid produces, read together with TSH. Free T3 is the active form that your body uses, and it is most useful when your symptoms and your TSH and T4 do not fully line up. The three are interpreted together as a pattern rather than in isolation.
Thyroid antibodies, TPO and Tg, point to autoimmune thyroid conditions such as Hashimoto's thyroiditis or Graves' disease, which are the most common causes of an underactive or overactive thyroid in the UK. They are included in the Comprehensive panel and are most worthwhile if your thyroid hormones are abnormal, you have a family history of thyroid disease, or your symptoms suggest an autoimmune cause. The doctor can advise whether they are useful for you.
The Basic Thyroid Function Check (TSH and Free T4) is a sensible first check of thyroid function. The Advanced check adds Free T3, which helps when symptoms and the basic result do not fully match. The Comprehensive Thyroid and Antibody Check adds Free T3 and the TPO and Tg antibodies for the fullest picture, and is the usual choice for autoimmune questions or a known thyroid condition. If you are unsure, book the Basic check and the reviewing doctor will advise whether more is needed.
No fasting is needed for a thyroid test. Two things help accuracy. If you take biotin supplements, often found in hair, skin and nail products, stop them 48 to 72 hours beforehand because biotin can interfere with thyroid lab assays. And if you are monitoring a known thyroid condition, a morning sample at a consistent time of day makes results easier to compare, as TSH varies a little through the day.
Blood tests are central to assessing the thyroid, but a diagnosis is made by a doctor interpreting the pattern of results alongside your symptoms, not by a single number. A borderline or subclinical result often needs a repeat test after a few weeks before anything is confirmed. The doctor reviewing your result will explain whether a repeat, a GP review or onward care is the right next step.
Most results are returned within 2 to 5 working days. The outcome note is sent to your email, password-protected. If a particular test takes longer, you will be told when you book.
No. You can book online, in person at the clinic, or add the test during a GP consultation at KONCEPT®. A GMC-registered doctor reviews each request for clinical suitability before your appointment is confirmed.
The Basic Thyroid Function Check is 69 pounds, the Advanced check is 99 pounds, the Comprehensive Thyroid and Antibody Check is 199 pounds, and the standalone Thyroid Antibody Check is 75 pounds. A single 39 pound administration fee covers your whole visit, charged once per visit and never per test, however many tests you book. The all-in prices are therefore 108 pounds, 138 pounds, 238 pounds and 114 pounds. If a GP review is recommended afterwards, that is a separate booking: your NHS GP at no NHS charge, or a KONCEPT GP consultation at 149 pounds.
Thyroid testing is part of NHS care, usually starting with TSH and adding more markers when indicated, and the NHS pathway remains the right route for many people. KONCEPT® complements that by offering a fuller panel directly, without referral, with same-day, Saturday and out-of-hours appointments subject to availability, and a doctor-reviewed outcome note. With your written consent we share a clinical summary with your NHS GP so the result is added to your NHS record.
Only with your written consent. We can send a clinical summary to your NHS GP so your result is added to your NHS record and your ongoing care stays joined up.
46 to 48 Wood Street, Kingston upon Thames, KT1 1UW. KONCEPT® Medical Clinic is opposite Kingston station, with parking nearby at the Bentall Centre.
These are genuine reviews from patients who tested at KONCEPT®, drawn from Google and our verified-patient reviews. The same themes recur: a calm, professional, unhurried experience, and a fast results turnaround.
"I went in for a blood test a couple days ago which was such a smooth and pleasant experience and I received my results back the next day. A super quick turn over time which is just what I needed."
"I came here for some blood tests and travel vaccinations. Really impressed by the blood test results turnaround, came in a couple days. As a Kingston local it is great to have the clinic in easy reach."
"I came to KONCEPT medical clinic for a blood test. Everyone was really nice and welcoming, and made me feel at ease straight away. It was quick, professional and I did not feel rushed. Would definitely recommend."
"I went for a blood test at KONCEPT medical clinic. It was quick, easy, and everyone was super friendly. Really smooth process."
Genuine reviews from our Google Business Profile and verified-patient reviews. Individual experiences vary. Results are typically returned within 2 to 5 working days.
From £69 per test plus a single £39 administration fee per visit, charged once per visit and never per test. Same-day, evening and Saturday appointments available. No GP referral needed. Doctor-reviewed result, sent securely to your email.
Serving Kingston upon Thames and the surrounding KT, SW and TW catchment, including Surbiton, Wimbledon, Richmond, Putney, Teddington, New Malden, Esher, Thames Ditton, Walton-on-Thames, Twickenham and Hampton.
This page is for information only and is not a substitute for medical advice. A thyroid blood test shows how the thyroid is working and is interpreted by a qualified clinician alongside your symptoms and history. A diagnosis is not made on a single result alone.