Home Blood Tests & GP Services
The answer is in your blood
The answer is in your blood
Book a blood test, at-home or in-clinic.

Private GP Services

We’re not just a clinic; We’re your partner in health

At Rainbow, we pride ourselves on offering premium Private GP Services that cater to your health needs with the utmost convenience and professionalism. Our goal is to provide you with personalised care, right when you need it.

Comprehensive Healthcare Services

Reach out to us today and take the first step towards better health.

Consultation at Clinic

Our Weight Loss Program. 

Our comprehensive program includes a thorough blood test, clinical assessment, and, if needed, personalised GP consultations. Under the guidance of our healthcare team, appropriate patients may be prescribed weight loss injections to support their journey.


Begin your journey to a healthier you with Rainbow Labs today.

Saxenda Injection
Blood Tests
ED Treatment
Fitness & Nutrition
Women’s Health
Men's Health
ED Treatment
Why Rainbow Blood Tests?
The future of healthcare starts at home
Why Rainbow?
The future of healthcare starts at home
GP-reviewed smart reports
Smart Reports provide a comprehensive yet easy-to-read interpretation of your blood test, empowering you to take control of your wellbeing. Based on up-to-date literature, the reports provide insightful information on how each biomarker can identify abnormalities in your body and their potential impact on your life.
Cholesterol Chart
Blood Test Results
In-house laboratory
Our in-house laboratory adheres to the highest quality control standards, ensuring the accuracy and reliability of your blood test results. We don’t outsource your tests, meaning you don’t have to wait long periods for your results. There is a line of communication between our GPs and laboratory technicians, ensuring a streamlined process from sample process to report delivery and treatment.
In-house laboratory
Our in-house laboratory adheres to the highest quality control standards, ensuring the accuracy and reliability of your results. We don’t outsource your tests, meaning you don’t have to wait long periods for your results. There is a line of communication between our GPs and laboratory technicians, ensuring a streamlined process from sample process to report delivery and treatment.
Blood Test Results
NHS trained GPs
Our NHS-trained GPs review your blood test results and provide personalised recommendations for your health. Additionally, you can even book a same-day appointment with one of our doctors to discuss your results and if any abnormalities are detected, you can receive prompt treatment.
NHS-trained GPs
How our blood tests work?
Four simple steps to better health
Collect Blood Sample
Collect Sample
Collect your sample at home or book an appointment at one of our clinics.
Send Your Blood Sample
Send Your Sample
Send your sample on the same day using our royal mail return label in the kit.
Get Blood Results
Get Results
Receive your results in 24-48 hours by email.
Same-day GP appointments
Same-day GP appointments
You have the option to discuss your blood tests and get treatment if needed.
Health Matters

General Health

Persistent Skin Conditions: Top 5 reasons and how to manage them
Persistent skin conditions can be both uncomfortable and frustrating. If you're one of the many people affected in the UK, understanding the underlying causes is the first step towards effective management. Here’s a look at the top five reasons for persistent skin conditions:
  • Genetics: Many skin conditions, like eczema, psoriasis, and rosacea, have a genetic component. If family members suffer from these conditions, you might be more prone to them.
  • Environmental Triggers: Pollutants and allergens in the environment can aggravate the skin. For instance, urban pollution can increase skin sensitivity and flare-ups of conditions like acne.
  • Immune System Responses: Conditions like psoriasis and eczema are often linked to the immune system reacting inappropriately. Triggered by factors like stress or illness, these responses can cause uncomfortable skin symptoms.
  • Hormonal Changes: Fluctuations in hormones, particularly during puberty, pregnancy, or menopause, can lead to conditions like acne or melasma, which are influenced by hormonal levels.
  • Lifestyle Factors: Diet, stress, and skincare routines heavily impact skin health. Diets high in refined sugars and dairy products can exacerbate acne, while stress can trigger flare-ups of many skin conditions.
Managing persistent skin conditions involves a combination of lifestyle adjustments, proper skincare, and possibly medical treatment. Here are effective strategies to manage such conditions:
  • Skincare Routine: Establish a gentle skincare routine. Use hypoallergenic, non-comedogenic products that do not irritate the skin. Moisturizing regularly helps maintain the skin's barrier, especially for conditions like eczema and psoriasis.
  • Diet and Hydration: Maintain a balanced diet rich in antioxidants and omega-3 fatty acids, which can help reduce inflammation. Staying hydrated is also crucial for maintaining skin health.
  • Stress Management: Stress can exacerbate many skin conditions. Techniques such as yoga, meditation, and regular exercise can reduce stress and improve the condition of your skin.
  • Medical Treatments: For some conditions, over-the-counter treatments may not be enough. Prescription medications, such as topical steroids or newer biologic drugs, can be effective. Always consult with a GP or a dermatologist to find the appropriate treatment.
  • Avoid Triggers: Identify and avoid personal triggers that may cause flare-ups. These can include certain skincare products, allergens, or environmental factors.
Implementing these strategies can help manage symptoms and improve the quality of life for those suffering from persistent skin conditions. Regular follow-ups with a doctor are essential to monitor the condition and adjust treatments as necessary.
Apr 23,2024 - anupamrainbowl

Women's Health

Essential Biomarkers for a Healthy Pregnancy and Postpartum Recovery
Pregnancy is a time of significant physiological changes, making health monitoring crucial for the wellbeing of both the mother and the developing baby. Understanding key biomarkers can help expectant and new mothers maintain optimal health throughout pregnancy and the postpartum period. Here, we explore the importance of haemoglobin, ferritin, vitamin D, vitamin B12, folic acid, and protein levels.


Haemoglobin is a protein found in red blood cells that is critical for carrying oxygen throughout the body. During pregnancy, the volume of blood increases to support the growing fetus, often diluting haemoglobin levels. Low haemoglobin, or anaemia, can lead to fatigue, weakness, and in severe cases, complications during delivery. Monitoring haemoglobin levels helps ensure that both mother and baby are receiving enough oxygen.


Ferritin serves as an indicator of the body's iron stores. Iron is essential during pregnancy for supporting increased blood volume, fetal growth, and brain development. Low ferritin levels can signal iron deficiency, which is linked to low birth weight. Ensuring adequate iron levels through ferritin tests can prevent anaemia and associated risks.

Vitamin D

Vitamin D is vital for bone health and immune function. It also plays a role in the development of the baby's bones and teeth. Deficiencies in vitamin D during pregnancy have been associated with, preeclampsia, and low birth weight. Adequate vitamin D levels support maternal bone health and promote healthy development of the fetus.

Vitamin B12

Vitamin B12 is crucial for brain development and the functioning of the nervous system. It works closely with folic acid to help prevent neural tube defects and other developmental abnormalities in the fetus. Low levels of B12 during pregnancy can lead to fatigue, neurological issues, and may contribute to anaemia. Ensuring sufficient B12 intake is essential for a healthy nervous system and overall wellbeing.

Folic Acid

Folic acid is well-known for its role in preventing neural tube defects, which affect the brain and spinal cord of the developing baby. Adequate folic acid prior to conception and during early pregnancy reduces the risk of these defects significantly. It also supports the rapid growth of the placenta and foetus, making it a critical nutrient during pregnancy.

Protein Levels

Proteins are the building blocks of the body’s cells. During pregnancy, they are crucial for the growth and repair of tissues, as well as for the increase in blood volume. Monitoring protein levels can help ensure that the mother’s diet is supporting both her increased needs and those of her developing baby. Regular monitoring of these biomarkers during pregnancy and the postpartum period can significantly impact the health outcomes of both mother and baby. At Rainbow Labs, we offer comprehensive at-home testing solutions that make it easier for expectant and new mothers to keep track of these essential health metrics. By understanding and managing these biomarkers, mothers can look forward to a healthier pregnancy and a smoother recovery postpartum.
Apr 17,2024 - anupamrainbowl
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of our profits towards bridging healthcare gaps

At Rainbow, we combine cutting-edge technology with a heartfelt commitment to global health. We firmly believe that everyone, regardless of where they live, deserves access to quality healthcare. 

That’s why we are proud to allocate 10% of our profits to charitable activities aimed at improving healthcare access in India and South Africa.

With each test you take, you are not only taking care of your own health but also contributing to our collective efforts to bridge the healthcare gap, bringing us closer to a future where healthcare disparities are diminished.

Thank you for being a part of our journey!



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Important Safety Information

Take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level are allergic to Tadalafil or any of the ingredients in Tadalafil

Discuss your health with your doctor to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help

Tadalafil can cause serious side effects. Rarely reported side effects include:

an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis

sudden vision loss in one or both eyes. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION). Stop taking Tadalafil and call your healthcare provider right away if you have any sudden vision loss

sudden hearing decrease or hearing loss. Some people may also have ringing in their ears (tinnitus) or dizziness. If you have these symptoms, stop taking Tadalafil and contact a doctor right away

Before you take Tadalafil, tell your healthcare provider if you:

have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure

have had heart surgery within the last 6 months

have pulmonary hypertension

have had a stroke

have low blood pressure, or high blood pressure that is not controlled

have a deformed penis shape

have had an erection that lasted for more than 4 hours

have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia

have retinitis pigmentosa, a rare genetic (runs in families) eye disease

have ever had severe vision loss, including an eye problem called NAION

have bleeding problems

have or have had stomach ulcers

have liver problems

have kidney problems or are having kidney dialysis have any other medical conditions

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Tadalafil may affect the way other medicines work, and other medicines may affect the way Tadalafil works, causing side effects. Especially tell your healthcare provider if you take any of the following:

medicines called nitrates

medicines called guanylate cyclase stimulators such as Adempas (riociguat)

medicines called alpha-blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosin mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of Tadalafil with alpha-blockers can lead to a drop in blood pressure or to fainting medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase), or atazanavir sulfate (Reyataz)

some types of oral antifungal medicines, such as ketoconazole (Nizoral) and itraconazole (Sporanox)

some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin

other medicines that treat high blood pressure

other medicines or treatments for ED

Tadalafil should not be used with REVATIO or with other PAH treatments containing PDE5 inhibitors.

Tadalafil does not protect against sexually transmitted diseases, including HIV.

The most common side effects of Tadalafil: headache; flushing; upset stomach; abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision; stuffy or runny nose; back pain; muscle pain; nausea; dizziness; rash.