Quick Reference
- Full form
- Estimated Glomerular Filtration Rate
- Sample type
- Blood
- Fasting
- Not required
- Marker measured
- 1
- Report turnaround
- Same day
- Available at
- All locations
About eGFR
eGFR estimates how well your kidneys are filtering waste from your blood, calculated from your creatinine level along with your age and gender. It is one of the most useful single numbers for tracking kidney health over time.
No fasting is required, since eGFR is calculated from your creatinine result. Results are available the same day.
How to Prepare
- No fasting required.
- No special preparation needed before your blood draw.
Frequently Asked Questions
What does eGFR measure?
It estimates how well your kidneys are filtering waste, calculated from your creatinine level, age and gender.
Do I need a separate blood draw for eGFR?
No, it is calculated from the same sample used for your creatinine test.
What does a low eGFR mean?
It suggests reduced kidney filtering capacity, and your doctor will monitor the trend over time rather than one reading alone.
Is eGFR tested routinely?
Yes, it is commonly included in kidney function panels and general health checkups, especially for diabetics and hypertensive patients.
How soon will my report be ready?
Same day.
Is home sample collection available?
Yes, in all City Care Lab service areas.
This page provides general health information and is not a substitute for medical advice. Speak with your doctor about your specific results and treatment.