Kidney Blood Test - welzo
Kidney Blood Test - welzo
Kidney Blood Test - welzo
Kidney Blood Test - welzo
Kidney Blood Test - welzo
The_Daily_Mirror_logo - welzo
Healthline_logo.svg_1 - welzo
metro_1 - welzo

Kidney Blood Test

Kidney Blood Test - welzo
Kidney Blood Test - welzo
Kidney Blood Test - welzo
Kidney Blood Test - welzo
Kidney Blood Test - welzo
The_Daily_Mirror_logo - welzo
Healthline_logo.svg_1 - welzo
metro_1 - welzo

Sale price £35.00
34 Reviews

The Kidney Blood Test is a diagnostic procedure that can help your doctor determine your kidney functioning or the cause of your kidney problems.


Free next-day delivery
Results within 2 days
What does it test for?
  • Urea
  • Estimated Glomerular Filtration Rate (eGFR)
  • Creatinine
  • Sodium
Email when stocked
The_Daily_Mirror_logo - welzo
Healthline_logo.svg_1 - welzo
metro_1 - welzo

The UK's Highest Rated Home Testing Provider

Online Influencer
Joanna Charice reviewed
"After using the Welzo Tiredness & Fatigue Blood Test due to ongoing tiredness, I found the testing process simple and the results came quickly. They revealed low iron levels. With this knowledge, I adjusted my diet and started iron supplements, which markedly improved my energy. This test was a key part in addressing my fatigue."
Assistant Athletic Trainer
Jordan Waits reviewed
"I simply ordered the test online, received it in the mail a few days later, and took the test in the comfort of my own home using a quick finger prick. The instructions were clear and easy to follow, and the process itself was quick and painless."
Health & Life Coach
Roxy Richards reviewed
"I followed the recommendations provided by Welzo, and I have to say, I feel so much healthier now. I have a lot more energy, and I just feel better overall. It's amazing how much of a difference small changes can make"
Online Influencer
Mimi Reviews reviewed
"The Welzo Female Hormone Test was a quick and effective way to shed light on my irregular periods. The results were clear and led to actionable insights, improving my discussions with my healthcare provider. Overall, a very positive experience."
  • Biomarkers
  • Information


Urea is the liquid waste excreted by the urinary system of the body. After absorption of nutrients in the blood, the complex protein molecules are broken down by the cells and urea is produced, which is then transported to the kidneys via bloodstream. The nephrons help separate the excess urea from the blood and produce a less concentrated liquid (a mixture of excess urea, water and other waste) to be secreted as urine. Excess urea in the blood is called uremia which is a sign of malfunctioning kidneys, and this can be traced by the kidney blood test. If elevated levels of urea is detected, urgent treatment is always advisable. 

Estimated Glomerular Filtration Rate (eGFR)

The blood that flows into the kidneys is filtered in small units called nephrons, which consist of a network of vessels called a glomerulus. The Kidney blood test measures the efficiency of the kidney in terms of filtering waste materials from blood by calculating the eGFR values from combining the creatinine levels with age and gender. The value of eGFR helps to determine the health of the kidneys; while the safe level is above 90, a level below 60 is a sign of kidney malfunction and a level below 15 indicates the patient needs to be treated immediately.


Creatinine is the waste product generated by the body when muscles are subjected to excessive torsion. A certain amount of creatine in muscles, breaks down into creatinine everyday due to enhanced physical activity. Intake of high protein foods also increases the creatinine levels in the bloodstream. Men generally have higher amounts of creatinine compared to women because of a greater muscle mass. A serum creatinine value in the blood as found by the kidney blood test can indicate the health of the kidneys. The safe level of creatinine in the body is 1.2 for women and 1.4 for men. Higher values can indicate that the process of purification of blood is not happening in a proper manner.


Sodium levels in blood can help to identify if the kidneys are functioning properly, in addition to determining if the daily water intake is optimum or less than the recommended hydration levels. The Kidney Blood Test measures the amount of sodium which can vary across 24 hours; higher amounts of sodium during the day. Both high levels and low levels of sodium can cause kidney problems, along with nausea, loss of appetite and fatigue. High sodium levels can also be a product of eating foods that contain high amounts of sodium.

Have you been feeling any of these symptoms lately?

The Kidney Blood Test is suitable for individuals experiencing one or more of the following symptoms:

1. Weight Loss

2. Dryness of skin

3. Poor appetite 

4. Increased urination, especially at night

5. Irregular sleep cycle/Insomnia 

6. Fatigue 

7. Discharge of blood in urine

Additional Information

The test involves drawing blood from a vein in your arm and looking at it under a microscope to check for abnormalities in your kidneys’ structure or function. A kidney blood test may also be called a renal panel, renal function panel, or a kidney profile.

Your doctor may order a kidney blood test if you have symptoms of a kidney problem, such as:

– Blood in your urine

– A decrease in the amount of urine you produce

– Swelling in your hands, feet, or abdomen

– A high blood pressure reading

– Unexplained fatigue

– Persistent nausea or vomiting

– Chest pain

The results of a kidney blood test can help your doctor determine the severity of your kidney problem and whether you need treatment. In some cases, a kidney blood test may also help your doctor rule out other causes of your symptoms.

If you are having a kidney blood test, you will need to avoid eating or drinking anything for 12 hours before the test. Tell your doctor if you are taking any medications, because some drugs can interfere with the results of the test. You may also need to stop taking certain medications before the test.

A kidney blood test is a quick and easy procedure that can provide valuable information about your health. If you have any questions or concerns, be sure to talk to your doctor.

It is wiser to protect your kidneys before it is too late

Taking care of the kidneys goes a long way in ensuring multiple body systems function properly. So getting a kidney blood test is always beneficial because it lets one know the current condition of their kidneys and what to change in their daily life to benefit their renal health, thereby preventing chronic kidney disease in the long run.

of world population suffer from Chronic Kidney Disease (CKD) across the globe
Chronic Kidney Disease can lead to a degradation in kidney efficiency over time. CKD only starts exhibiting symptoms in latter and more progressive stages.
of CKD cases are a result of diabetes and high blood pressure
Diabetes and high blood pressure are the primary progenitors of CKD. High blood pressure is linked to heart disease which is the major cause of death in people suffering from kidney disease.

Experts Opinion on Kidney Home Tests

"A kidney blood test is a comprehensive panel of overall kidney health. This test will allow you to monitor kidney function and observe the kidneys for any signs of infection or disease."

Dr Sameer Nakedar
Experts Opinion on Kidney Home Tests

How to take a Kidney Blood Test Test

Collecting a blood sample for your finger prick home test is straightforward. Watch the video below for more details on how to take a home blood test.

  • how1 - welzo

    Pick your home test

    We have a wide range of tests to cover your health needs. Order with next day United Kingdom delivery and avoid sitting in a doctor's office or clinic. Use our quiz to find the right test for you.

  • how2 - welzo

    Take your test

    Activate your test and collect your sample in the morning. Return your sample on the same day, using the prepaid shipping label provided. Samples use a simple finger prick collection method that takes around 5 minutes to complete.

  • how3 - welzo

    Results within 48 hours

    You'll get verified results and insights into what the biomarkers mean. Order now to become a healthier you!

1 of 3

Kidney Blood Test Information

Specification of Kidney Blood Test

  • Test name: Kidney Blood Test
  • Also known as & related tests: Renal function panel, Kidney function test, Kidney profile test
  • Biomarkers: Urea, Estimated Glomerular Filtration Rate (eGFR), Creatinine. Sodium
  • Test tube: SST (Gold microtainer)
  • Brand: Welzo
  • Turn around time: Approx. 24 hours
  • Lab test ranges:
  • Test Kit Marking: MHRA/UKCA
  • Location of Lab: United Kingdom

What is a Kidney Blood Test?

A Kidney Blood Test is a home health test offered by Welzo. The Kidney Blood Test can be taken from the comfort of your home using a finger prick sample, which is then sent back to our lab for analysis and interpretation.

What does a Kidney Blood Test for? 

A Kidney Blood Test tests for the following: Urea, Estimated Glomerular Filtration Rate (eGFR), Creatinine. Sodium.

What are the benefits of a Kidney Blood Test?

Checking your health through the use of Kidney Blood Test is an important way to track your health. Home testing offers the convenience of conducting health assessments in the comfort of your own home, while enabling quicker, more private results without the need for visiting a healthcare facility.

Can a GP review my Kidney Blood Test?

Yes, Welzo offers a GP review service for the Kidney Blood Test. Follow the link if you would like to have an online GP appointment with your Kidney Blood Test.

Are Kidney Blood Tests available on the NHS?

The NHS offers Kidney Blood Tests subject to eligibility requirements, consultations and local guidelines.

Kidney Blood Test Kit and Ordering

How can a Kidney Blood Test be ordered?

A Kidney Blood Test can be ordered online through Welzo's secure checkout. Select the Kidney Blood Test and add the patient's name and details, then checkout for next-day delivery.

What is included in the Kidney Blood Test test kit?

The Kidney Blood Test contains the following items in the test kit:

  • 1 x UN3373 Test Kit for Biological Substances Category B (test kit design may vary from images displayed online depending on the test selected.
  • 1 x Free Return Label 
  • 1 x Finger Prick Lancet / Urine Sample Pouch or Swab (depending on the test ordered)
  • 1 x Cleansing Wipe/ Alcohol Swab
  • SST (Gold microtainer)

Kidney Blood Test Biomarkers and Results

What biomarkers are tested for in a Kidney Blood Test?

The Kidney Blood Test checks for the following biomarkers: Urea, Estimated Glomerular Filtration Rate (eGFR), Creatinine. Sodium

What are the results ranges for a Kidney Blood Test?

Kidney Blood Test reference ranges vary based on age, sex, population sample and numeric test result ranges. However, once you complete your tests, you will receive clear reference ranges for your Kidney Blood Test.

What is a normal test range for Kidney Blood Test?

The Kidney Blood Test range will be provided on the advanced Welzo reporting panel which will factor in multiple aspects such as age, population size comparison and biological sex.

Kidney Blood Test Procedure and Timing

When should a Kidney Blood Test be taken?

It is best to take a Kidney Blood Test first thing in the morning.

How long does a Kidney Blood Test take?

The typical turnaround for a Kidney Blood Test is 24 hours from receipt at the Welzo laboratory, Monday to Thursday. However, results may come back faster or slower depending on how busy the Welzo laboratory is and if you have requested any biomarkers that take longer to test for. In this case, results can take up to 5 days.

Are there any special preparations required before taking the Kidney Blood Test (e.g., fasting)?

We will let you know via email if there are any special requirements for the Kidney Blood Test. However, typically we recommend you take a Kidney Blood Test first thing in the morning, fasted.

What is the best time to post my Kidney Blood Test?

The best time to return your Kidney Blood Test sample is Monday to Thursday, before 14:00 to ensure the product arrives at our lab on time for same-day analysis.

What sample is required for a Kidney Blood Test?

The Kidney Blood Test requires a capillary blood sample using a SST (Gold microtainer) that is collected from a finger-prick blood sample.

Convenient and fast
Convenient and fast

Welzo health tests are shipped straight to your address the very next day.

Secure and accurate
Secure and accurate

We are a team of UK based doctors and scientists, making cutting edge analysis accessible.

24/7 Customer Support
24/7 Customer Support

We issue results 24/7, giving you personal insights into your body with support from our UK based admin and lab team.

Customer Reviews

Based on 6 reviews
Muhammad Yasir Ikram
good service

good service

Fox Khan

The home kidney blood test kit is an excellent tool for monitoring health. Easy to use with clear instructions, it provides quick and accurate results. It's a great convenience for those who can't frequently visit the doctor. A must-have for anyone prioritizing their kidney health.

Kidney blood test

Quick easy test with fast results. Thanks welzo. Would use again xx

Fatima Saylors

The kidney-blood-test kit I purchased was simple to use and provided quick and accurate results. I appreciate the peace of mind it offers. Highly recommended for anyone wanting to monitor their kidney function at home.

Legacy Randolph

The home kidney-blood-test kit was indeed a lifesaver. Clear instructions eased the process, and I found results very accurate. It saved me a trip to the clinic during this pandemic. Worth every penny, especially for the peace of mind it provided. Highly recommended for anyone needing routine kidney checks.