Weight Loss Commencement Blood Test
A detailed blood test providing an overview of your health before starting a weight-management programme. It assesses blood sugar regulation, cholesterol, thyroid function, nutritional status and other markers that can help inform your care.
What does it check?
- Blood sugar regulation: Glucose, HbA1c, insulin, C-peptide and a calculated insulin-resistance marker (HOMA-IR)
- Cholesterol and cardiovascular markers: Total, HDL and LDL cholesterol, triglycerides, cholesterol ratio, apolipoprotein B and lipoprotein(a)
- Thyroid health: TSH, free T4, free T3 and thyroid antibodies
- Liver and kidney function: Liver enzymes, bilirubin, albumin, creatinine, eGFR, urea and electrolytes
- Full blood count: Including haemoglobin, red and white blood cells, and platelets
- Iron and nutritional status: Ferritin, iron studies, vitamin B12, folate and vitamin D
- Hormones: Testosterone, SHBG, Free Androgen Index, oestradiol, FSH, LH, prolactin and cortisol
Who may benefit?
This test is designed for anyone preparing to begin a medically supervised weight-management programme, providing a comprehensive baseline assessment of the metabolic, hormonal, cardiovascular and nutritional markers that help inform safe, personalised treatment decisions.
Before your appointment
- Book a morning appointment, ideally around 9 am because cortisol is included. Night-shift workers: contact us for timing advice.
- Attend fasting, drinking plain water only. We will confirm the fasting duration.
- Contact us before fasting if you have diabetes or take medicines requiring food. Do not change prescribed medication without advice.
- Avoid strenuous exercise before your appointment and sit quietly before blood collection. Contact us if you are unwell.
- Tell us about medicines and supplements, especially biotin, iron, steroids, hormone treatments and recent B12 injections or vitamin infusions.
- If you menstruate, contact us about cycle timing and tell us if you use hormonal contraception or HRT.
Results and follow-up
Your blood sample will be collected and sent to the laboratory. A clinician will review your results, and these will be shared with you alongside advice on any recommended next steps. If further assessment or discussion is needed, we will explain how to arrange this.
£229 includes blood collection, laboratory testing and clinical review of your results. A £25 booking deposit is payable when booking and deducted from the total, leaving £204 payable at your appointment. Consultations, medication and any additional investigations are charged separately, with costs explained before you proceed.
Please read our cancellation policy before booking.
Important information
This appointment is for blood testing only and does not include a consultation. A separate consultation is required to discuss your results in detail, assess suitability for weight-loss treatment or develop a treatment plan.
Results must be interpreted alongside your symptoms, medical history and medication. Completing this test does not guarantee that weight-loss medication will be appropriate or prescribed.
Ready to take the next step?
Book a consultation with our clinical team to discuss your results and the most appropriate next steps for your health.