Weight Loss Blood Test

Optimise your weight loss journey. Our Weight Loss Blood Test is a comprehensive diagnostic tool designed to uncover the biological factors that may be affecting your ability to lose weight effectively. By analysing key hormones, inflammation markers,... Read more

Optimise your weight loss journey. Our Weight Loss Blood Test is a comprehensive diagnostic tool designed to uncover the biological factors that may be affecting your ability to lose weight effectively. By analysing key hormones, inflammation markers, blood sugar levels, and metabolic indicators, this test provides deep insights into your current health status – empowering you to take a targeted, informed approach to weight loss.

This test is a perfect complement to our Weight Loss Programme, helping you optimise your results and personalise your journey based on real data.

To take the test:

Book blood test at home or in-clinic
Receive results in 3-5 working days from your sample reaching the laboratory.

Want to find out more? Enquire via the form and a member of the team will get back to you.

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Venous Sample
GP Report Included
11 Key Biomarkers Tested
200+ Clinic Locations
Quick Turnaround of Results

Blood taken by a professional in-clinic Collection Method £99 Visit one of our clinics to have blood taken from your arm from a healthcare professional

200+ Clinics Nationwide

Book a home nurse visit to have your blood sample taken Collection Method £119 Choose 3 preferred dates for a Nurse to come to your location at your convenience

Please check coverage with Postcode

Check Availability (Based on location)

More Information

Who should take this test?

This test is ideal for:

Individuals struggling with stubborn weight gain or resistance to weight loss.
People starting or currently on a weight loss injection programme.
Anyone experiencing symptoms such as fatigue, low energy, slow metabolism, mood changes, or cravings.
Those with a history of metabolic conditions (like insulin resistance, thyroid disorders, or high cholesterol).

Why should I take this weight loss blood test?

Weight loss isn’t just about diet and exercise – your body’s internal chemistry plays a huge role. Hormonal imbalances, chronic inflammation, poor blood sugar control, and metabolic sluggishness can all make weight loss harder.

Taking this test helps you:

Identify underlying issues that may be hindering your progress.
Customise your weight loss strategy, including medication dosing, nutrition, and lifestyle.
Track improvements as your programme progresses.
Improve your chances of achieving sustainable, long-term results.

What do results tell you?

Your results will reveal:

Whether hormones like cortisol, testosterone, and thyroid hormones are helping or hurting your weight loss efforts.

How well your body manages blood sugar and inflammation — two key factors in metabolic health.
Your lipid profile, showing whether your cholesterol levels are within a healthy range.
If you have potential nutritional deficiencies (like iron) that could be contributing to fatigue and reduced performance.These insights allow you and your healthcare provider to make smarter, more effective decisions around your treatment plan.

Biomarkers explained

1. Cortisol
A key stress hormone. High levels can trigger fat storage, especially around the midsection, and impact sleep and metabolism.

2. HbA1c
Reflects average blood sugar over 2–3 months. Raised levels suggest insulin resistance or diabetes risk — both linked to weight gain.

3. HsCRP
An inflammation marker. Chronic inflammation can slow metabolism and increase fat storage.

4. Iron
Low iron causes fatigue and reduced exercise capacity — making weight loss more difficult.

5. Testosterone
Supports muscle, energy, and fat metabolism. Low levels can lead to fat gain and low motivation.

6. TSH (Thyroid Stimulating Hormone)
Regulates thyroid function. Imbalances can affect metabolism and energy.

7. Free T4 (Thyroxine-Free)
The active thyroid hormone. Low levels may signal a sluggish metabolism.

8. Lipid Screen
Measures cholesterol and triglycerides. Imbalances may point to poor fat processing and higher metabolic risk.

9. Non-HDL Cholesterol
Captures all “bad” cholesterol types. High levels are linked to heart and metabolic disease.

Want to get started on your weight loss journey? Find out more about how you can get going here.

Not sure if this test
is right for you?

Enquire via the form and a member of our team will get back to you, they are more than happy to help answer your questions and talk through the best option for you.

Contact us if you aren't sure, we'd be happy to help!

Register Your Interest

FAQs

PLACING AN ORDER

Which test should I choose?

How does the service work?

When will my order arrive?

How accurate are your tests?

I've just paid, can I change my order?

Can I order a test for someone else?

Why do I need a kit for my appointment?

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ARRANGING AN APPOINTMENT

How do I book an appointment?

How is the test carried out?

Do I need to fast before my test?

I am nervous about my blood test appointment.

Do I need to take my kit to my appointment?

AFTER YOUR TEST

My blood was haemolysed - what does that mean?

Do you provide results 7 days a week?

How do I book a follow up GP consultation?

We promise to deliver affordable testing to everybody.

When you’re worried about your health, life can feel very stressful, especially if you don’t have the answers you need. We believe that health testing should be available to all, giving you answers when and where you need them.

That’s why we’ve partnered with Splitit, Dopple and Clearpay so you can pay for your tests in interest-free instalments, if you prefer.