Better2Know Liver & kidney

Kidney Function Test Home Test Kit

A home finger-prick kit checking urea and creatinine, two markers of kidney function, without needing to visit a clinic.

  • At-home test
  • Subscription available
Sample
Blood
Collection
At-home finger-prick, post to lab
Results in
1 day
Biomarkers
1
Tests for
  • Kidney Function

Test specifications

Provider
Better2Know
Sample type
blood
Collection method
at-home finger-prick, post to lab
Turnaround time
1 day
Biomarkers tested
1
At-home test
Yes
Doctor reviewed
No
Gender focus
Both

What's tested

1 biomarker as listed by Better2Know.

  • Kidney Function

About this test

This test checks two markers linked to kidney function: urea and creatinine, both waste products your kidneys normally filter out of your blood. Raised levels of either can point to reduced kidney function. This two-marker panel is narrower than Better2Know's own clinic-based Kidney Function Test, which reports on five related markers including electrolytes.

Against the wider set of similarly sized liver and kidney tests we track, £59 is around 56% below the median of £135, making this one of the more affordable options in that broader comparison. We do not have a direct competitor offering this exact two-marker combination in our data, so we cannot say how it compares to a specific rival test.

It scores particularly well for price and for collection convenience, since you can complete it entirely at home and it costs well below the typical price for tests of this size. It scores more modestly for clinical depth, given it reports only two markers, and, like the rest of Better2Know's range, loses marks on results and follow-up because the result is not reviewed by a doctor as standard.

Who is it for?

This suits people who want a quick, affordable check on urea and creatinine without visiting a clinic, for example as a general check-in on kidney function. If you want a broader set of kidney-related markers, including electrolytes, Better2Know's own clinic-based Kidney Function Test reports on five related markers rather than two, though it requires a venous blood draw.

How it works

You collect a finger-prick blood sample at home using the kit provided and post it to Better2Know's laboratory, using special delivery at checkout if you want a tracked, next-day service. Better2Know states results are typically ready within one working day of your sample arriving, viewable in your secure online patient area with an email or SMS alert. Results are not reviewed by a doctor as standard, though Better2Know says it will arrange a doctor consultation if your results are abnormal.

Pros & cons

Pros

  • Can be completed entirely at home with a finger-prick sample, no clinic visit needed.
  • Around 56% below the roughly £135 median for similarly sized liver and kidney tests we track.
  • Laboratory turnaround of one working day once your sample arrives.
  • Kits ordered before 4pm on a weekday are dispatched the same day.

Cons

  • Covers only two markers, urea and creatinine, narrower than Better2Know's five-marker clinic kidney test.
  • As standard, the result is not reviewed by a doctor.
  • No directly comparable two-marker test from another provider in our data to check the price against.

Our editorial score

Compare Health Test Score Home kidney check well below the typical price
Editorial confidence: 9.0/10

This home kit measures urea and creatinine, two waste products that build up when kidney function is reduced, from a finger-prick sample you collect yourself and post to the lab. At £59 it sits around 56% below the roughly £135 median for similarly sized liver and kidney tests we track, making it one of the more affordable ways to check this. Results are not reviewed by a doctor as standard.

Score breakdown

  • Clarity and documentation 9.0/10

    The listing publishes a detailed description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.

  • Clinical depth 6.1/10

    1 biomarkers, placing it in the 26th percentile of liver kidney tests we track.

  • Collection convenience 8.0/10

    A finger-prick sample you take at home; results in around 1 days, well ahead of the liver kidney norm of 2.

  • Results and follow-up 3.0/10

    Results are not doctor-reviewed and no consultation is included; the provider does not describe the report format.

  • Trust signals 6.5/10

    Trustpilot 4.2 from 775 reviews; CQC registered; trading 18+ years.

  • Value for money 9.3/10

    £59.00 against a median of £135.00 for the 17 similarly sized liver kidney tests we track (-56%).

Calculated 13 September 2026 from the facts we hold about this test and provider, using our published scoring formula. Scores are not hand-edited.

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