Concierge renal testing · London
Private kidney function tests in London, the modern renal panel.
Creatinine, eGFR, U&Es and the urine ACR — the modern kidney work-up, interpreted by a nephrologist alongside your medication and health history.
Why patients choose us
- 01
We explain, not just report
You get a conversation about what the numbers mean, not a PDF and silence.
- 02
No bundle upselling
We recommend the tests that answer your question — and skip the ones that do not.
- 03
Accredited labs only
UKAS-accredited laboratories, reviewed every six months on turnaround and quality.
Indicative pricing
What private kidney tests cost in London.
Indicative ranges across our partner clinics and laboratories. Send the details and we quote firm figures across two or three options.
In short
U&Es plus urine ACR in our network: £75–£150, with results in 24–48 hours.
| Test or panel | Indicative range | Appointment time | Results turnaround |
|---|---|---|---|
| U&Es panel (creatinine, eGFR, electrolytes) | £45–£90 | 5 min | 24 hrs |
| U&Es + urine ACR | £75–£150 | 10 min | 24–48 hrs |
| Full renal work-up + urinalysis | £180–£360 | 15 min | 3–5 days |
| Renal panel + nephrologist review | £350–£700 | 60 min | 3–5 days |
| Cystatin C for accurate eGFR | £150–£300 | 5 min | 3–5 days |
| 24-hour urine collection | £180–£360 | 24 hrs | 5–7 days |
Prices vary by laboratory, which markers are included, how quickly you need the results, and whether a nephrologist review is added. We come back with a firm quote within one working day.
The problem
An eGFR number, on its own, isn’t an answer.
Kidney results shift with hydration, muscle mass, medication and the time of day. Knowing whether a single number matters — and what to do next — is the part that counts. That’s what we do.
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Borderline eGFR?
We add cystatin C, repeat where needed, and tell you whether the trend actually matters.
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Protein in the urine?
We run the right ACR sample and put the number in the context of your blood pressure and diabetes.
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On kidney-active meds?
ACE inhibitors, NSAIDs, lithium and chemo need baseline and follow-up monitoring — we set it up.
The journey
From enquiry to results — what happens, in order.
One clinician from first message to explained results — usually within a few days.
Phase 1 · Before your test
Concierge, off-stage for you
Phase 2 · On the day
~10 minutes for the draw
Phase 3 · After
Concierge, back on
- 01
Before
You tell us what’s going on
A short, confidential form. Symptoms, any existing results, and what you want to understand.
- 02
Before
We recommend the right panel
Within one working day: which markers actually answer your question, and what they cost. We won’t upsell a bundle.
- 03
Before
We book the appointment
Clinic, home or office, often same or next day. We tell you about hydration and first-morning urine.
- 04
On the day
Blood draw and urine sample
A few minutes with an experienced phlebotomist, plus a urine sample where indicated.
- 05
On the day
Off to the lab
Your sample goes to a UKAS-accredited laboratory the same day.
- 06
After
Results reviewed
Results are checked by a consultant nephrologist, usually within 24–72 hours.
- 07
After
We explain them
We talk you through eGFR, ACR and any next step — repeat, ultrasound, or referral.
Typical end-to-end: 3–7 days. Urgent cases: same day.
What it shows
Find the panel that matches your question.
Kidney tests answer very different questions. These are the reasons people come to us most.
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CKD monitoring
Track eGFR and ACR over time so a slow decline doesn’t go unnoticed.
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Diabetic kidney screen
Annual ACR and eGFR to catch diabetic nephropathy at the earliest stage.
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Hypertension work-up
Renal panel to check whether high blood pressure has begun to affect the kidneys.
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Medication-related renal monitoring
Baseline and follow-up for ACE inhibitors, NSAIDs, lithium, chemotherapy and more.
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Family history of CKD or PKD
Screening where polycystic kidney disease or inherited renal disease runs in the family.
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Pre-op renal check
A quick baseline before elective surgery, contrast imaging or new medication.
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Proteinuria pathway
A structured work-up when a dipstick or ACR result comes back abnormal.
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Red flag — same-day A&E
Reduced urine output, sudden swelling or breathlessness need urgent hospital assessment, not an outpatient blood test.
Popular panels
The panels we arrange most.
What each option is actually for.
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U&Es panel
Creatinine, eGFR, sodium, potassium, urea and chloride — the standard renal snapshot.
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U&Es + urine ACR
Adds the albumin-to-creatinine ratio, the earliest sign of kidney damage in diabetes and hypertension.
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Full renal work-up
U&Es, ACR, urinalysis, bicarbonate, calcium, phosphate, PTH and vitamin D where indicated.
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Renal panel + nephrologist consult
The bloods plus a 60-minute review with a consultant nephrologist to plan next steps.
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Cystatin C eGFR
A muscle-mass-independent eGFR — useful in bodybuilders, amputees, the elderly and borderline results.
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24-hour urine collection
Gold-standard measurement of protein loss, creatinine clearance and stone risk factors.
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Post-transplant surveillance
Tailored monitoring after a kidney transplant, coordinated with your transplant team.
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Post-contrast renal check
A short follow-up panel after CT or angiography contrast to confirm the kidneys have recovered.
Our vetted London network
A small panel of nephrologists and labs, we picked them.
Consultant nephrologists and accredited laboratories across central, north, west and south London, plus home and office visits. Introductions are made privately, once we understand your case.
Selection criteria
How we choose every nephrologist and laboratory in our network.
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UKAS-accredited laboratories, with results reviewed by a consultant nephrologist
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Consultant nephrologists available for same-week interpretation and follow-up
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Both creatinine and cystatin C available where clinically indicated
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Onward renal ultrasound and biopsy pathway if the results warrant it
Preparation and practicalities
Small details, big difference to the numbers.
Kidney tests are simple, but preparation matters — hydration, timing and muscle mass all change a result. We tell you exactly what to do.
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Hydration and exercise
Both affect creatinine — a hard gym session the day before can raise a result. Aim for normal hydration on the day.
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Muscle mass matters
Muscular people naturally have higher creatinine. This is where Cystatin C is especially useful.
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How eGFR is calculated
eGFR uses your age, sex and creatinine. Cystatin C removes muscle-mass bias and can give a truer figure.
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The urine ACR sample
A first-morning urine sample is ideal — it’s the most reliable way to detect early protein leak.
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Pregnancy
Pregnancy alters kidney function and reference ranges. We interpret results in the right physiological context.
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Ethnicity and eGFR
For black patients, UK eGFR calculators no longer race-adjust — this change gives more accurate staging.
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Repeat abnormal results
A single abnormal result deserves a repeat before any diagnosis — day-to-day variation is real.
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Share prior labs
Always share previous kidney results with us. Trend matters more than any single number.
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Avoid heavy protein 48 hrs before
A big protein meal or high-protein supplement can lift creatinine transiently. Eat normally in the 48 hours before your test.
Reading your report
A renal report can look busy. It isn’t.
However many markers are run, the report follows the same four parts.
A quiet reminder
A single abnormal result is a prompt to repeat, not a diagnosis on its own.
If you’d like us to talk you through it before your follow-up, just ask.
- 01 Header
Indication and medications
Why the test was requested, your relevant medical history and every medication or supplement you take.
- 02 Technique
Which markers are included
Which panel was run — U&Es alone, ACR, cystatin C, 24-hour urine — and the reference ranges used.
- 03 Findings
Each marker, plus eGFR and ACR
Every result with its reference range, together with the calculated eGFR and, where indicated, urine ACR.
- 04 Impression
Read this first
Whether the kidneys are normal, what CKD stage the results suggest, and the next step — repeat, ultrasound, or nephrology.
Recognised by major UK insurers
Routine screening is often self-funded; where testing is medically indicated we confirm cover with your insurer.
Frequently asked
Everything we get asked about kidney tests.
Quick answers on eGFR, ACR, cystatin C, cost, fasting, referrals and CKD stages.
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What do U&Es measure?
U&Es — urea and electrolytes — measure creatinine, urea, sodium, potassium, chloride and bicarbonate. Together with eGFR they give a snapshot of how well the kidneys are filtering and how balanced your salts are.
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How is eGFR calculated?
eGFR is estimated from your creatinine, age and sex using the CKD-EPI equation. It gives an approximation of how many millilitres of blood your kidneys clear per minute. A normal eGFR is generally 90 or above.
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What is Cystatin C and when is it useful?
Cystatin C is a protein filtered by the kidneys that isn’t affected by muscle mass. It’s useful when creatinine may be misleading — in very muscular people, the elderly, amputees, or when a borderline eGFR needs confirmation.
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What does the urine ACR tell us?
The albumin-to-creatinine ratio (ACR) detects very small amounts of protein leaking into the urine — the earliest sign of kidney damage in diabetes, hypertension and other renal disease, often long before eGFR falls.
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Do I need to fast before a kidney test?
Fasting isn’t usually required for U&Es or ACR. Avoid a heavy protein meal or protein supplements in the 48 hours before, and don’t do a hard workout the day before, as both transiently raise creatinine.
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How much do private kidney function tests cost in London?
A basic U&Es panel is £45–£90, U&Es plus urine ACR £75–£150, and a full renal work-up with a nephrologist review £350–£700. We confirm a firm figure within one working day.
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Do I need a referral?
No. Most kidney panels can be arranged by self-referral. If the results warrant it, we arrange a consultant nephrologist review and any onward imaging.
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How quickly will I get my results?
Standard U&Es and ACR results are back within 24–48 hours. Cystatin C and 24-hour urine collections take 3–7 days. We share results the same day we receive them.
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What are the stages of chronic kidney disease?
CKD is staged 1 to 5 by eGFR: stage 1 (≥90 with kidney damage), 2 (60–89), 3a (45–59), 3b (30–44), 4 (15–29) and 5 (<15, kidney failure). ACR further categorises risk from A1 to A3.
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When should I see a GP urgently?
Seek same-day medical review for reduced or no urine output, sudden swelling of legs or face, breathlessness at rest, blood in the urine, or a rapid rise in creatinine. These need urgent assessment, not a routine outpatient test.
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