Private Urea and Electrolytes (Kidney Function) Blood Test London
Urea and Electrolytes (Kidney Function) to assess kidney function and monitor renal health status.
Urea and Electrolytes (Kidney Function)
Test fee £64 + £50 phlebotomy fee (per visit)
- Results in 1 day"
- UKAS accredited laboratory
- Professional phlebotomy service
- Confidential results portal
Or call 020 7183 2362
Pay at clinic on the day of your appointment
Kidney Function Blood Test (Urea & Electrolytes) in London
The Kidney Function (Urea & Electrolytes) blood test available at South Kensington Medical & Dental is a clinically trusted kidney function blood test used to measure kidney-related blood markers associated with filtration and electrolyte balance.
This test is often referred to as a renal function test and is commonly requested for laboratory assessment, monitoring, or routine health screening. It provides insight into kidney-related markers and is widely used as part of general health testing.
What Does the Urea & Electrolytes Test Measure?
Together, these markers provide an overview of kidney-related blood values.
Urea
A waste product formed from protein metabolism.
Creatinine
Used to calculate estimated glomerular filtration rate (eGFR).
Sodium
Essential for fluid balance and nerve function.
Potassium
Important for heart rhythm and muscle function.
Chloride & Bicarbonate
Contribute to acid–base balance.
eGFR (Estimated Glomerular Filtration Rate)
A calculated laboratory value commonly used to reflect kidney filtration.
Why You May Need a Blood Test for Kidney Function
Many patients also choose a private kidney function test proactively, even without symptoms.
Persistent fatigue or weakness
Swelling of ankles, feet, or hands
Changes in urination (frequency, colour, or volume)
High blood pressure
Diabetes or cardiovascular disease
Long-term medication use (e.g. blood pressure drugs, anti-inflammatories)
Family history of kidney disease
Understanding Kidney Function Test Results
Results are provided without clinical interpretation and should be reviewed by a GP or specialist alongside symptoms and medical history.
Normal urea, creatinine, and electrolytes
Values within expected ranges.
Raised creatinine or low eGFR
Values outside reference ranges.
Electrolyte imbalances
Variations in sodium, potassium, or bicarbonate levels.
Borderline results
May be monitored with repeat laboratory testing.
Who Should Consider a Private Kidney Function Test?
This blood test for kidney function is commonly used as a first-line laboratory assessment.
Want fast access to laboratory kidney testing
Are monitoring diabetes, hypertension, or cardiovascular conditions
Are taking medications that may affect kidney-related blood markers
Have a family history of kidney disease
Want reassurance through routine laboratory screening
How the Test Works
Book Online or Walk-In
Choose a time that suits you at our South Kensington clinic (20 Old Brompton Road).
Sample Collection
A trained nurse performs a standard venous blood draw.
Lab Analysis
Your sample is sent to our UKAS-accredited laboratory.
Results Delivery
You will receive a written laboratory results report, typically within 24 hours.
Kidney Function Blood Test Results & Turnaround
Results may be shared with your GP or specialist for further medical assessment if required.
Fast turnaround time (typically within 1 working day)
Results delivered via a secure, confidential online portal
Clear reporting of all kidney and electrolyte markers
Why Choose South Kensington Medical & Dental?
Our clinic at 20 Old Brompton Road is easily accessible from across London, including Kensington, Chelsea, Westminster, and Knightsbridge.
Nurse-led venous blood collection
UKAS-accredited laboratory analysis
Rapid and reliable results
Confidential, discreet service
Convenient Central London location
Kidney Function Blood Tests as Part of Ongoing Health Monitoring
A kidney function blood test can be taken alone or alongside other blood tests for a broader assessment of your health. Repeat testing may be used to track laboratory values over time, based on personal preference or external medical advice.
What is a Kidney Function Blood Test?
A kidney function blood test evaluates how well your kidneys are reflected through waste products and electrolyte levels in the blood. The kidneys are vital for:
- Filtering toxins and waste
- Balancing fluids and salts
- Regulating blood pressure
- Supporting bone and heart health
How It Works
Book Online
Choose a convenient date and time
Visit Our Clinic
20 Old Brompton Road, South Kensington
Quick Blood Draw
Professional phlebotomy, 5 minutes
Get Results
Results in 1 day"
Frequently Asked Questions
Common questions about this blood test
Book Your Kidney Function Blood Test in London
If you are looking for a private kidney function test in Central London, our clinic offers accurate laboratory testing with fast results.
Visit Our London Clinic
Central London location with excellent transport links
Address
South Kensington Medical & Dental
20 Old Brompton Road
South Kensington
London SW7 3DL
Getting Here
- 2-minute walk from South Kensington tube
- Circle, District & Piccadilly lines
Opening Hours
- Monday, Wednesday9am - 6pm
- Tuesday, Thursday9am - 8pm
- Friday8am - 5pm
- Saturday10am - 4pm
- Sunday10am - 4pm
Contact
Ready to Book Your Test?
No GP referral needed. Book online and get tested at our South Kensington clinic. Results within 1 day".
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Meet Our Medical Team
Our experienced medical team is fully qualified and registered with the GMC and NMC, delivering safe, high-quality care in line with the highest professional standards.
Because our patients deserve nothing less.
Registered. Regulated. Trusted.
At South Kensington Medical & Dental, we are fully registered with the Care Quality Commission (CQC) and our clinicians are registered with the relevant UK regulatory bodies, including the GDC and GMC. Our dentists, dental nurses and medical professionals deliver care that meets the highest clinical, safety and ethical standards, because our patients deserve nothing less.
