Blood Test: Magnesium
Results in 2 working days
Analysed by NHS Lab
Personalised GP advice
Tracked 24 delivery
Quick finger prick test
Keep track of your magnesium levels with our at-home blood test. This essential mineral plays a crucial role in various bodily functions, from supporting muscle and nerve function to maintaining a healthy heart rhythm.
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1 Biomarker
- What gets tested?
- What are biomarkers?
- Finger prick test
- Important Information
Magnesium (serum)
Biomarkers are specific compounds we can detect in your blood sample that reflect different things about your health. Your test will tell you your levels for each of the above biomarkers, and whether they are in a normal range.
You can do this test at home without the need for a doctor. We'll send you everything you need to collect your sample and post it back to us. And it's all included in the cost.
Blood tests available through Rheia Health London are not intended to diagnose, treat, cure, or prevent any medical condition. Results should always be reviewed in consultation with your healthcare provider.
These tests are suitable for clients aged 18 and over. Certain tests may not be appropriate during pregnancy or for specific health conditions—please check suitability with your healthcare provider before purchasing.
Refunds for unused or incomplete tests are subject to our refund policy. By purchasing, you confirm you have read and agree to our terms. For full details, refer to the FAQ section or contact us.
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How our Magnesium (serum) Blood Test works
Getting the insights you need to improve your health has never been easier.
Collect Your Sample
Easily collect a small blood sample from your fingertip using our simple kit. Once complete, send it back to our lab in the prepaid Tracked-24 envelope included.
Get Your Results
Your results are doctor-analysed and in-depth, delivered within 2 working days. Alongside the detailed report, you’ll receive actionable insights and optional expert commentary to help guide your next steps.
Take Action
Your personalised report highlights areas for improvement and tracks your progress. For additional support, book a session with our nutritionist to explore tailored nutritional solutions that fit your needs.
How can a magnesium blood test help you?
This test checks the magnesium levels in your blood serum. 99% of the magnesium in your body is found in your bones, muscles and tissue, with the rest in your blood serum.
Checking your levels can help uncover the causes of symptoms related to high or low magnesium levels.
Symptoms of a magnesium deficiency include;
- Muscle weakness
- Fatigue
- Irregular heartbeat
- Nausea and vomiting
Symptoms related to high levels of magnesium in your blood include:
- Diarrhoea
- Nausea
- Stomach cramps
How to test for magnesium deficiency at home
Checking for a magnesium deficiency at home is easy with our finger prick blood test. It has everything you need to collect a small blood sample and send it back (for free) to our NHS labs for analysis.
It takes around 15 minutes to complete the test and once the sample has reached our lab, we aim to return your results within 2 working days.
You’ll be able to see your magnesium levels, as well as where they should be for your age and gender.
Benefits of magnesium
Magnesium is an essential mineral that plays an important role in over 300 reactions in the body. You should get most of the magnesium you need from your diet, but you can also get magnesium supplements.
Magnesium is needed for:
- Muscle function
- Nerve function
- Bone health
- Heart health
- Energy production
- Blood sugar control
- Digestive health
It can also be helpful for pregnant women, helping with foetal development – especially bone and nervous system development.
FAQ
How soon will the test arrive?
All our kits are sent out via Royal Mail first class post, so it should be with you within 3-5 working days.
What happens after I place my order for a blood test?
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.
Does a doctor review my results?
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.
Important Information
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.
Can I download the results to share with my GP?
Yes, you can download your results from your health dashboard as a PDF to share with your GP.
