eGFR Test London: What It Reveals About Your Kidney Health
Tharb Faisl
Kidney health is a silent foundation of your overall wellbeing. One of the most powerful yet often overlooked indicators of kidney function is the eGFR-or Estimated Glomerular Filtration Rate. At Marylebone Diagnostic Centre in Central London, our data over the past year has revealed a growing trend: a significant number of patients show mildly reduced or borderline eGFR levels, often without symptoms.
This blog explores what eGFR means, why it matters, how our local data compares to global trends, and how you can take proactive steps to protect your kidney health – starting with a simple blood test.
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What is eGFR?
eGFR (Estimated Glomerular Filtration Rate) measures how well your kidneys are filtering waste and excess fluid from your blood. It’s calculated using:
- Serum Creatinine Levels
- Age
- Sex
- Ethnicity
An eGFR result gives insight into how efficiently your kidneys are working.
| eGFR Value | Kidney Function Category | Explanation |
| 90+ | Normal | Healthy kidney function |
| 60–89 | Mildly decreased | Early signs; may be normal with age |
| 45–59 | Mild to moderate decrease | Monitor closely; lifestyle changes recommended |
| 30–44 | Moderate to severe | Indicates significant kidney damage |
| 15–29 | Severe kidney dysfunction | Likely symptomatic; urgent intervention needed |
| <15 | Kidney failure (End-stage) | Dialysis or transplant may be required |
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Why Should You Care About eGFR?
You might feel perfectly fine even if your kidneys are underperforming. That’s the danger-chronic kidney disease (CKD) can progress silently until it’s too late. Early detection through eGFR testing is your best defence.
Book Your eGFR test in Lonodn Today!
An abnormal eGFR can be linked to:
- High blood pressure
- Diabetes
- Heart disease
- Recurrent urinary tract infections
- Autoimmune conditions
At Marylebone Diagnostic Centre, we often combine eGFR with other tests such as U&Es, FBC, creatinine, and liver function for a broader health picture.
Book Your eGFR test in Lonodn Today!
eGFR Trends from Our Central London Patients
Over the last 6 months, here’s how eGFR results among Marylebone patients have been distributed:
A representation of patient data collected at Marylebone Diagnostic Centre (Jan–June 2025)
| eGFR Range | Percentage of Patients |
| 90+ (Healthy) | 46% |
| 60–89 (Mildly low) | 38% |
| 45–59 (Moderate risk) | 9% |
| Below 45 (High risk) | 7% |
Key Insight: Over 27% of our patients showed some degree of reduced kidney function, many without symptoms. This reinforces the importance of annual blood screenings, especially if you’re over 40, hypertensive, or diabetic.
Book Your eGFR test in Lonodn Today!
Who Should Get an eGFR Test?
You should strongly consider testing your kidney function if:
- You have high blood pressure or diabetes
- You’re over age 40
- You experience fatigue, swelling, or frequent urination
- You have a family history of kidney disease
- You take medications that affect kidney health (e.g., NSAIDs, diuretics)
Book Your eGFR test in Lonodn Today!
Prevention Starts with Awareness
Lifestyle changes that support kidney health:
- Drink plenty of water
- Reduce salt intake
- Avoid excessive protein supplements
- Exercise regularly
- Quit smoking
- Monitor blood pressure and blood sugar
Early detection through a simple blood test at Marylebone Diagnostic Centre could prevent irreversible kidney damage.
Book Your eGFR test in Lonodn Today!
Frequently Asked Questions (FAQs)
Book Your eGFR test in Lonodn Today!
Book Your Kidney Health Check Today
Don’t leave it to chance. Whether you’re feeling tired, have a history of high blood pressure, or simply want peace of mind—a quick blood test can reveal what your kidneys are really doing.
Visit us at Marylebone Diagnostic Centre, 37 Baker Street, London.
Book your eGFR test or call +44 7495 970109.
