Kidney Blood Test


This test is ideal to measure how well your kidneys are functioning. Kidney function can be affected if you suffer with diabetes, high blood pressure or injury to the kidneys.

A kidney blood test is typically ordered when a person has symptoms such as an increase in urine frequency, an unexplained fever, or jaundice. This test checks the level of blood in your kidneys and can help to identify other conditions that may affect your kidney health.



Kidney Blood Testing

Our kidneys are a vital organ which remove waste products from our bodies, regulate blood pressure and maintain balanced electrolyte levels.
When our kidneys are not functioning properly, in the early stages there may be no symptoms, so it is important to check that they are working properly with a blood test.

There are risk factors which may affect your risk of developing kidney disease such as:
  • High blood pressure
  • Smoking
  • Excess alcohol consumption
  • Frequent use of medication
  • Family history of kidney disease
  • Diabetes
  • Older age
  • Heart disease
Testing for kidney health

The test can be performed using a small amount of blood from a finger prick which you can do yourself.

How often should I have a kidney blood test?

We recommend testing your kidney health yearly so that if you have early kidney disease, it can be treated right away. Early stage kidney disease doesn’t always show any symptoms.

Other Questions

  • High blood pressure
  • Smoking
  • Excess alcohol consumption
  • Frequent use of medication
  • Family history of kidney disease
  • Diabetes
  • Older age
  • Heart disease

This blood test is to check on:

  • Kidney health

For best results (if medically suitable) it is advisable to fast (water is allowed) 12 hours prior to the test which needs to be taken first thing in the morning and posted on the same day on a Monday, Tuesday,or Wednesday.

Collection method: Finger prick
Results available: 2-3 days after the sample has reached the laboratory.


Urea is usually passed out through urine. It is a waste product from the breakdown of amino acids found in proteins.

Higher than normal levels may be indicative of a kidney problem, low levels may be indicative of dehydration.

Estimated glomerular filtration rate (eGFR)

This test will assess how well your kidneys are working.


Creatinine is usually passed out through urine. It is a breakdown of waste products made from the muscles.

A high level may be indicative of a kidney problem, however this does depend on muscle mass. Usually if a high muscle mass the creatinine may be higher. If levels are low it could be due to a low protein diet or reduced muscle mass.

How it Works

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1. Order and Receive Your Test

Order your Blood Test.
Receive it directly at home or work.
Delivered by courier with Free shipping.

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2. Take the Easy Finger-prick Blood Test

Activate your test online.
Collect 2-3 drops of blood.

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3. Freepost your Blood sample to our laboratories

Use the pre-paid package to post to our laboratories.
Simply drop it into your nearest high-priority Royal Mail postbox.

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4. Our laboratory team run the tests

Tests are run by our staff in a clean and secure environment.
All possible measures are taken to keep Vampires out.

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5. Receive Your Results within 7 days

We will email you to inform you that your blood test results are ready.
Login to your account to review the results.

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6. Track your levels over time

With regular ongoing tests, you can track your results.
Check if you’re improving healthily or where changes could be made.

What’s In The Test?

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Home to laboratory kit
  • Blood Test
  • A prepaid return envelope (UK & Ireland only)
  • Two single-use lancets
  • One blood collection tube
  • One blood collection tube label
  • One plastic blood collection tube case
  • Two adhesive plasters
  • A cleansing wipe