Kidney Function Blood Test

Want to measure your kidney function? Our Kidney Function Blood Test is the test you need.

Testing your kidney function is quick and easy. Just take your finger prick blood sample with our at home kit and use the pre-paid envelope to return your sample to our accredited lab.

  • Results and doctors report in 6 days or less
  • Free, next-working day delivery
  • Gold-standard kidney function test

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Personalise your kidney function blood test

You can choose how you'd to collect your blood sample. You may also want to add to your test panel depending on your age, sex and any symptoms.

Choose how to collect your blood sample
Add to your test
Dr Claire Merrifield

Dr Claire Merrifield

GP, PhD and our Medical Director

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What you need to know about our Kidney Function Blood Test

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Dr Claire Merrifield

Dr Claire Merrifield

GP, PhD and our Medical Director

Our Kidney Function Blood Test is a simple and accurate test to measure kidney funtion.

The kidney function test uses the biomarker cystatin C to calculate your eGFR (estimated glomerular filtration rate).

The bottom line is that if you want the best measure of kidney fuction, this is the blood test you need.

What's tested in your Kidney Function Blood Test?

  • Cystatin C

    Cystatin C has been shown to be a more accurate measure of kidney function than traditional creatinine. In particular, cystatin C is not affected by muscle mass or supplemental creatine intake, both of which can cause false results with creatinine.

    WHAT'S MEASURED?

  • Estimated glomerular filtration rate (eGFR)

    Kidney function is affected by your age and sex. We adjust for this and calculate your estimated glomerular filtration rate (a measure of kidney function).

    WHAT'S MEASURED?


What you need to know about our blood test for kidney function