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Kidney Filtration Check (eGFR) Home kit
Kidney health · home kit

Kidney Filtration Check (eGFR)

Measures creatinine and calculates your estimated glomerular filtration rate (eGFR) — the standard measure of how well your kidneys are filtering your blood.

Price £93 £74.99
Covers 2 markers
Type Home kit · posted to you
Order just this kit
Blood sample, collected at home
Avoid strenuous exercise and a large meat meal for 24 hours before. If you take creatine supplements, tell us.
Free delivery — posted to any UK address
Results explained by our clinical team
About this test

Everything you need to know about Kidney Filtration Check (eGFR)

Creatinine is a waste product made steadily by your muscles and cleared by your kidneys: the more slowly your kidneys filter, the higher it rises. The laboratory uses your creatinine, age and sex to calculate eGFR — an estimate of how many millilitres of blood your kidneys clean each minute, and the figure doctors use to stage kidney health.

Kidney function declines slowly and silently, often with no symptoms until it is well advanced, so a regular check is worthwhile if you have high blood pressure, diabetes, heart disease or a family history of kidney disease. Our clinical team explains your eGFR and, if it is lower than expected, what to do next.

What's measured

What's included

2 markers in this test

Creatinine Estimated Glomerular Filtration Rate (eGFR)
Who it's for

Worth considering if

  • High blood pressure, diabetes or heart disease
  • A family history of kidney disease
  • Regular use of anti-inflammatory painkillers such as ibuprofen
  • A routine check on kidney health from home
Important: A home test is not a diagnosis on its own. Where something needs looking at, we tell you what it means and what to do next. If you are unwell now, please see your GP or call 111 rather than waiting for a kit.
What to expect

Your home kit

1

Order online

Add the kit to your order — several kits can go in one order — and enter your delivery address. We post it to your door as soon as your payment reaches us, with free delivery.

2

Collect your sample at home

Follow the step-by-step instructions in the box. Avoid strenuous exercise and a large meat meal for 24 hours before. If you take creatine supplements, tell us. Post the sample back the same day, Monday to Thursday, in the return packaging provided.

3

Results explained

Your results are released to your account with a written explanation from our clinical team.

Frequently Asked

Kidney Filtration Check (eGFR) — FAQs

What is a normal eGFR?
An eGFR of 90 or above is normal, and 60–89 can be normal too, especially as you get older, if there are no other signs of kidney damage. Below 60 for three months or more suggests chronic kidney disease. A single low reading is usually repeated before any conclusions are drawn.
Can muscle or exercise affect the result?
Yes. Creatinine comes from muscle, so being very muscular, recent hard exercise, a large meat meal and creatine supplements can all raise it and make eGFR look lower than it really is.
Does this check for protein in my urine?
No. Kidney health is assessed with blood (eGFR) and urine (the albumin-to-creatinine ratio). This kit covers the blood part; your GP can arrange a urine check if your eGFR or risk factors suggest it.
How does the kit reach me?
We post it to your address anywhere in the UK as soon as your order is paid, and email you when it has been dispatched. Delivery is free on every home blood test kit. Everything you need to collect your sample and send it back is in the box.
How do I collect the sample?
Your kit contains everything you need and step-by-step instructions. Read them through first, collect at the time of day this test needs (see the preparation note above), label the sample and pack it in the return packaging provided.
When should I post my sample back?
On the day you collect it, Monday to Thursday, and not the day before a bank holiday — so it reaches the laboratory quickly and does not sit in the post over a weekend. A sample that arrives too old may not be able to be analysed.
Can I order several kits at once?
Yes. Use “Add to order” on each kit and then “Order” in the bar at the bottom — they go into one order and one payment and are posted together. Clinic blood tests are booked separately, because they need an appointment rather than an address.
How do I pay?
Home kit orders are paid by bank transfer. When you place your order we show our bank details and your payment reference on screen and by email, and we post your kit as soon as the payment reaches us.
How do I get my results?
Once the laboratory has analysed your sample, your results are released to your secure account with a written explanation from our clinical team, and a call where something needs talking through. Turnaround depends on the test and starts when the laboratory receives your sample.
More home test kits

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Add several kits to one order — one payment, posted together.

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