Blood Test: Advanced Thyroid

The thyroid is a gland in your neck that produces the hormones thyroxine (T4) and triiodothyronine (T3). These hormones regulate the activity of the cells and tissues in the body.

T3 is the biologically active hormone, with your body converting T4 into T3. This hormone controls the metabolism, the speed at which cells work. The more T3 is produced or converted, the faster cells metabolise. The level of hormones produced by the thyroid gland are controlled by the pituitary gland, which releases thyroid stimulating hormone (TSH) to stimulate the thyroid.

An overactive thyroid, known as hyperthyroidism, can have different causes. The most common cause is an autoimmune disorder called Graves’ disease. Other causes include thyroid nodules, excess iodine intake, inflammation of the thyroid, and certain medications.

The early warning signs of thyroid problems can include:

• being sensitive to the cold or heat
• weight gain / weight loss
• constipation
• low mood
• muscle aches and weakness
• loss of libido
• mood swings
• issues sleeping

An underactive thyroid (hypothyroidism) is usually caused by your immune system attacking the thyroid gland and causing it damage. This reduces its ability to produce sufficient hormones.

We have partnered with Forth to offer insightful, doctor-reviewed at-home blood tests, analysed in NHS-accredited labs. After purchase, your test kit will be sent to you within 3–5 working days. Each kit includes a 'Lab Request Form' with an activation link and unique code. Log on to the website to activate your account, where you can provide relevant information about your health.

Providing as much detail as you feel comfortable is highly recommended, as it enables specialist doctors to deliver personalised and comprehensive analysis. For example, sharing whether you are pregnant, breastfeeding, or managing specific health conditions allows the doctors to tailor their insights to your circumstances.

Once you collect your sample, we strongly encourage you to activate your account before sending your blood samples and ensure they are sent back to the lab as soon as possible and within 24 hours, especially for the Menopause Blood Test. This helps guarantee the most accurate results. You will be notified as soon as your results are ready by email or text.

All our kits are sent out via Royal Mail first class post, so it should be with you within 3-5 working days.

We have a team of doctors and nurses who look at all results and will comment on any results that are outside of the normal range for your age.

The blood tests offered through Rheia Health London are provided by Forth, an independent third-party service. These tests are not intended to diagnose, treat, cure, or prevent any medical condition. Always consult a healthcare professional before making decisions based on your test results.

Rheia Health London facilitates access to blood tests provided by Forth. We do not process, analyse, or store any personal health information related to these tests. All sample collection, analysis, and results are handled solely by Forth, who operates under their own policies and procedures.

All personal data associated with these blood tests is managed exclusively by Forth in compliance with the General Data Protection Regulation (GDPR) and other applicable data protection laws. For more details, please refer to Forth’s privacy policy here.

Test results are reviewed by qualified medical professionals provided by Forth. These results should be interpreted in conjunction with advice from your healthcare provider. Rheia Health London does not provide medical advice, diagnoses, or treatment based on these results. Clients are responsible for consulting their healthcare provider for any medical decisions or follow-up care.

The results provided by Forth are based on the samples submitted and the testing methods used. Variations in results may occur due to factors such as sample quality, handling, or biological differences. For questions about the accuracy or interpretation of your results, please contact Forth.

Blood tests are available for clients aged 18 and over. Please ensure you meet the eligibility criteria before purchasing. Certain tests may not be suitable for individuals who are pregnant or have specific health conditions. Please consult with your healthcare provider before purchasing to ensure the test is suitable for your needs.

Sample collection kits are provided by Forth and must be returned promptly within the specified time frame to ensure accurate results. For questions about sample collection or kit delivery, please contact us or Forth directly.

These blood tests are not suitable for urgent or emergency medical situations. If you have immediate health concerns, please contact your healthcare provider or emergency services.

Rheia Health London accepts no liability for any adverse outcomes resulting from the use of blood tests provided by Forth or the interpretation of test results by clients. The responsibility for any health decisions made based on test results lies solely with the client in consultation with their healthcare provider.

Refunds for unused or incomplete tests are subject to Rheia Health London’s refund policy and may also depend on Forth’s terms and conditions. Please contact us for further assistance regarding refunds.

Blood testing services are currently available only in United Kingdom. Clients are responsible for ensuring the availability of services in their location before purchase.

Test results are typically provided within the stated number of days after the sample is received by Forth. Delays may occur due to unforeseen circumstances. Samples provided for testing are managed by Forth and are retained or disposed of in accordance with their internal policies. For further details, please contact Forth.

By purchasing a blood test through Rheia Health London, you acknowledge that you understand and agree to these terms. It is the client’s responsibility to ensure the suitability of the test for their needs and to consult a healthcare professional for further guidance.

Yes, you can download your results from your health dashboard as a PDF to share with your GP.