Check your kidney health from the comfort of home. Creatinine, eGFR, urea and electrolytes — all tested from a single venous blood draw by a professional phlebotomist.
Find a Phlebotomist →A renal profile checks how effectively your kidneys filter waste and maintain electrolyte balance.
| Marker | What It Shows | Normal Range |
|---|---|---|
| Creatinine | Muscle waste product filtered by kidneys | 59 - 104 μmol/L (men), 45 - 84 μmol/L (women) |
| eGFR | Estimated kidney filtration rate | Above 90 mL/min |
| Urea | Protein waste product | 2.5 - 7.8 mmol/L |
| Sodium | Fluid balance electrolyte | 136 - 145 mmol/L |
| Potassium | Heart and muscle function electrolyte | 3.5 - 5.1 mmol/L |
Diabetes is the leading cause of chronic kidney disease. Annual kidney function testing is recommended for all diabetic patients.
Uncontrolled hypertension damages the kidneys over time. Regular eGFR monitoring catches decline early.
NSAIDs, ACE inhibitors, lithium and some antibiotics can affect kidney function. Regular monitoring is important.
Kidney function naturally declines with age. Baseline testing and periodic monitoring help detect problems early.
Enter your postcode, choose a time slot, and select the kidney function panel. No GP referral required.
A DBS-checked mobile phlebotomist arrives at your home and collects a venous blood sample in under 10 minutes.
Your sample is dispatched to an accredited laboratory the same day. Results typically within one to three working days.
Fasting is not usually required, but stay well hydrated.
Avoid excessive protein intake for 24 hours before the test, as it can temporarily raise creatinine.
Avoid strenuous exercise for 24 hours before the test.
Tell your phlebotomist about any medications you are taking, especially NSAIDs or blood pressure drugs.
Wear loose sleeves for easy access to your arm.
A kidney function test (also called a renal profile or U&E panel) measures creatinine, urea, eGFR and electrolytes (sodium, potassium, chloride, bicarbonate). These markers show how effectively your kidneys are filtering waste from your blood and maintaining electrolyte balance.
Fasting is not usually required for a standard kidney function test. However, staying well hydrated is important as dehydration can temporarily affect creatinine and eGFR results. If additional tests are being run alongside, your clinician will advise.
eGFR (estimated glomerular filtration rate) is calculated from your creatinine level, age, sex and ethnicity. It estimates how much blood your kidneys filter per minute. A normal eGFR is above 90 mL/min. Values below 60 mL/min for three months or more may indicate chronic kidney disease (CKD).
If you have diabetes, high blood pressure, heart disease, or a family history of kidney disease, annual testing is recommended. If you are already diagnosed with chronic kidney disease, your doctor will advise more frequent monitoring — typically every 3 to 6 months depending on the stage.
Yes. Kidney disease often has no symptoms in the early stages. Regular blood testing for creatinine and eGFR can detect declining kidney function before symptoms appear, allowing early intervention to slow or prevent progression.
Find a DBS-checked phlebotomist near you. Most bookings confirmed in under two minutes.
Find a Phlebotomist →Related reading: Understanding Kidney Function Tests