Private Thyroid Blood Test – Fast Answers for Tiredness, Weight Changes & Hormone Imbalance

Thyroid issues are one of the most commonly missed causes of fatigue, weight changes, hair thinning, low mood and brain fog.
But NHS thyroid testing can be slow… and often only checks TSH alone, which can miss early problems.

If you’ve been feeling “not quite yourself” and want fast, clear answers, our private thyroid blood test gives you a full picture of your thyroid health — without waiting weeks for GP appointments or referrals.

Available now at Holden’s Wellness Clinics in Doncaster (DN5) and Newark (NG24).

✔ What This Thyroid Test Checks

We offer a full thyroid profile — far more detailed than standard NHS screening.

• TSH – the main thyroid signal
• Free T4 – your inactive thyroid hormone
• Free T3 – your active thyroid hormone (rarely checked on NHS)
• Thyroid Antibodies (TPO & TG) – screens for autoimmune thyroid disease (Hashimoto’s / Graves’)

This test gives a complete picture of how your thyroid is functioning — and whether you may need to speak with your GP about treatment.

✔ Symptoms That Suggest Thyroid Problems

If you recognise yourself in any of the symptoms below, a thyroid test is one of the quickest ways to find out what’s going on:

• Constant fatigue no matter how much you sleep
• Weight gain with no change in diet
• Struggling to lose weight even with exercise
• Hair thinning or hair loss
• Feeling cold all the time
• Low mood, anxiety or brain fog
• Irregular periods or fertility issues
• Heart palpitations or feeling shaky
• Dry skin or brittle nails

Thyroid symptoms overlap with stress, menopause, poor sleep and lifestyle — meaning they’re often mistaken for something else.

A quick blood test can remove the guesswork.

If you’re also noticing fatigue, low mood, or hair thinning, you may also benefit from:

• Iron Test – low iron and thyroid imbalance often overlap.
• Vitamin D Test – deficiency worsens thyroid symptoms.
• Vitamin B12 Test – tiredness can be B12-related, not just thyroid.

✔ Common Causes of Thyroid Imbalance

Many people don’t realise their lifestyle or family history is putting them at risk. You may be more likely to develop thyroid issues if you have:

• Family history of thyroid disease or autoimmune conditions
• A high-soya diet (common in fitness, vegan and plant-based diets)
• Post-pregnancy hormonal changes
• Long-term stress or burnout
• Iodine deficiency or low selenium
• Polycystic Ovary Syndrome (PCOS)
• Gluten sensitivity or coeliac disease
• Autoimmune conditions (e.g., Type 1 diabetes, vitiligo, rheumatoid arthritis)

If any of these apply to you, a thyroid test is strongly advisable.

Other tests that commonly help rule out linked issues:

• Cortisol Test – stress and adrenal imbalance can mimic thyroid symptoms.
• Full Blood Count (FBC) – checks for anaemia that often accompanies thyroid conditions.

✔ Why Go Private for a Thyroid Test?

Many patients come to us after months of feeling unwell but:

• GP appointments are hard to get
• NHS often tests TSH only (missing early or autoimmune disease)
• Symptoms are dismissed as “stress” or “age”
• They want answers faster than the NHS can provide

Our thyroid profile gives you a full breakdown — not just the basics — with results usually in 24–48 hours.

If you’re exploring general wellness too, you may also want to look at our:

• Liver Function Test
• Kidney Function Test

✔ Price

• Full Thyroid Profile (TSH, FT4, FT3, TPO/TG antibodies) – £79

Samples are analysed by London Medical Laboratory — a CQC-registered UK partner lab used by leading clinics nationwide.

✔ Why Patients Choose Holden’s Wellness Clinic

• Fast results – typically 24–48 hours
• No GP referral needed
• In-depth thyroid markers (not the basic NHS panel)
• Discreet, local clinics in Doncaster & Newark
• Professional sample collection by trained clinicians
• Clear, easy-to-read results you can share with your GP

✔ How It Works

1. Book online – choose Doncaster or Newark
2. Attend your appointment – quick 15-minute sample
3. Lab testing – same-day dispatch to London Medical Laboratory
4. Results emailed directly to you within 24–48 hours

📍 Available at Both Clinics

• Doncaster – Holden’s Wellness Clinic (DN5)
• Newark – Holden’s Wellness Clinic (NG24)

Book Your Thyroid Blood Test

Get fast clarity so you can take control of your energy, mood, weight and long-term health.

See all our private blood tests

This page was updated in 2026 to reflect current UK guidance on blood testing and symptom assessment.

Thyroid Blood Test – FAQs

What does a thyroid blood test check?

A thyroid blood test measures hormones that control your metabolism, energy levels, weight, temperature, and mood.

It usually includes TSH and may also include T4 and T3.

Do I need to fast before a thyroid test?

No. Fasting is not required for thyroid testing. You can eat and drink normally.

What symptoms might suggest a thyroid problem?

Thyroid imbalance can cause symptoms such as:

• Persistent tiredness or exhaustion

• Weight gain or weight loss without explanation

• Feeling cold or overly warm

• Low mood, anxiety, or brain fog

• Hair thinning or hair loss

• Changes in heart rate

Symptoms are often gradual and easy to dismiss.