Thyroid Blood Test and Doctor Review on Harley Street
Thyroid blood tests measure hormones involved in metabolic regulation. Medical Express Clinic offers a basic FT4/TSH profile, an FT3/FT4/TSH profile and a fuller panel with thyroid antibodies. Laboratory testing starts from £100.
Est. 1984
Trusted clinical caresince 1984
UKAS-accredited labsGP & consultant pathways
As Featured In
Thyroid blood tests measure hormones involved in metabolic regulation. Medical Express Clinic offers a basic FT4/TSH profile, an FT3/FT4/TSH profile and a fuller panel with thyroid antibodies.
Or call 0207 499 1991.
Compare the tests in this service
Select a profile to see every included analyte before you book.
Thyroid function test in London
A private thyroid function test at Medical Express Clinic is a blood test on Harley Street, London, that measures the hormones involved in metabolic regulation.
Medical Express Clinic offers three thyroid profiles: Profile 1 (TSH and Free T4) at £100, Profile 3 (Free T3, Free T4 and TSH) at £142.50, and Profile 2 with thyroglobulin and thyroid peroxidase antibodies at £238.75.
A thyroid function test is commonly requested for symptoms of an underactive or overactive thyroid, for monitoring known thyroid disease, or where there is a family history of thyroid disease.
No standard fast is needed before a thyroid blood test, but thyroid medicines, biotin and other supplements should be mentioned before the sample is taken.
Thyroid results are usually ready within 1 working day, and the antibody panel can take 2 working days.
The thyroid test price covers the laboratory report only, and a separate GP consultation at £150 is available at 117a Harley Street if you want a doctor to go through the result with you.
Choosing a thyroid profile
Thyroid function is usually assessed with TSH and free T4. Free T3 is added when that extra hormone reading is clinically relevant, and thyroid antibodies when autoimmune thyroid disease is being considered.
The profile names follow fixed laboratory product codes, which is why Profile 3 appears before Profile 2. Profile 2 includes T4 (total T4) as a separate measurement from Free T4.
What is included
Turnaround is usually 1 working day; the antibody panel can take 2 working days.
Thyroid Profile 1 (FT4/TSH)
TF · £100
Analytes: Free T4; TSH
Turnaround: Usually 1 working day; the antibody panel may take 2 working days
Most useful when you need a first-line thyroid assessment
- •TSH: hormone from the pituitary gland that reflects how active the thyroid is
- •Free T4: the main circulating thyroid hormone
Thyroid Profile 3 (FT3/FT4/TSH)
TF3 · £142.50
Analytes: Free T3; Free T4; TSH
Turnaround: Usually 1 working day; the antibody panel may take 2 working days
Most useful when free T3 is clinically relevant to the question
- •Free T3: active hormone form, included on Profiles 3 and 2
- •Free T4 and TSH: as above
Thyroid Profile 2 with antibodies
TF2 · £238.75
Analytes: T4; TSH; Free T3; Free T4; Thyroglobulin antibodies; Thyroid peroxidase antibodies
Turnaround: Usually 1 working day; the antibody panel may take 2 working days
Most useful when antibody testing is part of a defined plan
- •Thyroid antibodies: thyroglobulin and thyroid peroxidase antibodies
- •Free T3, Free T4, TSH and total T4: fuller panel for defined clinical questions
Have a doctor review your thyroid result
Thyroid results need to be read alongside your symptoms, medicines and any recent illness or pregnancy. A private GP can help you choose the right profile, check whether thyroid medicines or supplements affect the timing of the sample, and go through the result with you.
If the result is abnormal, the doctor explains what it means, whether a repeat test is needed and whether treatment or a specialist referral should be considered.
- •Book a GP consultation first if you are unsure which thyroid profile you need
- •The report is usually ready within 1 working day; the antibody panel can take 2 working days
- •Book a follow-up consultation to go through the result and agree the next step
GP Consultation
£150
Discuss symptoms such as tiredness, weight change or feeling cold, and agree which thyroid profile to request.
Follow-Up Consultation
£100
For existing patients: go through your result with a doctor and agree the next step.
Only need the laboratory test? Our sister clinic lists thyroid blood tests at Blood London.
Fatigue, weight change and known thyroid disease
If the concern overlaps with menopause or cycle changes, female hormone testing can sit in a wider assessment.
- •Symptoms compatible with an underactive or overactive thyroid
- •Monitoring known thyroid disease
- •Persistent symptoms after limited previous testing
- •Family history of thyroid disease
Medicines and supplements
No standard fast is required. Mention thyroid medicines, biotin and other supplements before sampling.
Sampling on Harley Street usually takes 10 to 15 minutes. The report is usually ready within 1 working day; the antibody panel can take 2 working days.
How thyroid results are interpreted
- •Results must be interpreted with symptoms, medicines, pregnancy status and recent illness.
- •A broader panel is not automatically better for every patient.
Usually 1 working day; the antibody panel may take 2 working days. Your laboratory report is supplied securely.
The blood-test price covers the laboratory report, not a consultation. A separate GP consultation is £150 if you want a doctor to interpret the result with your symptoms and history.
A GP consultation first is more useful when it is unclear which profile matches the symptoms and history.
Urgent care is the safer first step when there is severe chest pain, marked palpitations with faintness, or another emergency symptom.
Source: NHS underactive thyroid diagnosis.
Related tests and services
Find another blood test
Search over 1,000 markers and panels. Type to filter, or browse by category — same-day appointments on Harley Street.
Find a test
Packages & profiles
Commonly requested
- Full Blood Count (FBC)£63.75 · 1 working day
- Liver Function Tests£72.50 · 1 working day
- Thyroid Function TestFrom £100 · 1-2 working days
- Cholesterol & Lipid Profile£72.50 · 1 working day
- Anaemia & Iron Profile£126.25 · 1 working day
- HbA1c (Diabetes Screen)£71.25 · 1 working day
- Female Hormone & MenopauseFrom £147.50 · 1 working day
- Male Hormone & Testosterone£238.75 · 1 working day
- Insulin Resistance£111.88 · fasting required
- INR Testing£39.38 · 1 working day
Specialist & genetic
- Gamma GT£36.25 · 1 working day
- Lupus Anticoagulant£98.75 · Clotting disorder screen · 2 days
- Hughes Syndrome£151.25 · APS markers · Results in 2 days
- Sjögren's SyndromeSpecialist autoimmune panel · Walk-in available
- Stool Parasites (Microscopy + PCR)£159.38 · Combined stool panel · 2-3 days
- Heavy Metal Screen£407.50 · Toxic metals panel · 7-10 days
- EDS Genetic Panel£1,375 · NGS panel · Results in 6 weeks
- SMA Genetic Test£641.25 · Carrier screening · 10 days
Sources & References
- TSH and T4 blood testing is used when thyroid dysfunction is suspected. - NHS underactive thyroid diagnosis[Link]
Dr Mohammad Bakhtiar
Health Screening and Men's Health • GMC 4694470
MD, PhD, LRCP, MSc, DHMSA
“Dr Bakhtiar has worked at Medical Express Clinic for over 20 years and leads the clinical team. His work includes health assessments, sexual health screening, diagnosis and treatment.”
Service information reviewed 26 August 2026.
Related blood tests
Thyroid function test FAQs
What is the difference between the three thyroid profiles?
Profile 1 includes Free T4 and TSH. Profile 3 adds Free T3. Profile 2 includes Free T3, Free T4, TSH, total T4 and both thyroid antibodies.
Do I need to fast?
A standard fast is not required. Mention thyroid medicines, biotin and other supplements before sampling.
Can a doctor go through my result with me?
A private GP consultation is £150, and a follow-up consultation for existing patients is £100. The doctor reviews the result alongside your symptoms and agrees the next step.
