Estimated Glomerular Filtration Rate (eGFR) Test

Fasting and dietary instructions:

No fasting is required for this test. However, as a general precaution, avoid alcohol and a heavy, fatty meal the evening before any blood test. These can temporarily alter several commonly tested markers even in tests that do not require strict fasting.

Medication guidance:

If you take NSAIDs (such as ibuprofen or diclofenac), certain antibiotics, or contrast agents, inform your doctor before the test. These medications can transiently elevate creatinine and urea levels, and your doctor may advise a brief medication pause if it is clinically safe to do so.

What to bring:

Carry your doctor's test order, a photo ID, and your corporate OPD insurance card to the appointment. If you have had this test done before, bring your previous reports , comparing values over time is clinically more meaningful than interpreting a single reading in isolation.

Timing:

For most blood tests, a morning appointment after overnight fasting gives the most standardised results. If your test does not require fasting, a morning slot is still preferable as it minimises the influence of the day's food intake and physical activity on marker levels.

When does a doctor order Estimated Glomerular Filtration Rate (eGFR) Test?

Estimated Glomerular Filtration Rate (eGFR) Test is ordered when a doctor needs objective laboratory data to support, confirm, or rule out a clinical diagnosis. It may also follow up on a previously abnormal result, assess your response to a new treatment, serve as a baseline before starting a medication that affects the measured marker, or form part of a pre-operative health assessment.

Who should get Estimated Glomerular Filtration Rate (eGFR) Test done?

Estimated Glomerular Filtration Rate (eGFR) Test is commonly included in basic metabolic or kidney function panels. Doctors may order it for symptoms like reduced urine, swelling, fatigue, or when monitoring diabetes and high blood pressure. Those who benefit most from regular Estimated Glomerular Filtration Rate (eGFR) Test testing include adults above 40, people with a sedentary lifestyle or obesity, those managing existing chronic conditions, smokers, and anyone whose previous result was borderline or just outside the reference range. Early detection through regular testing is significantly more cost-effective than treating advanced or complicated disease.

What happens after the results are ready?

Once your results are available, book a follow-up consultation with your doctor or a GetVisit-verified specialist to review the findings. Your doctor will explain what each value means, compare it against the reference range, and advise on the next steps , whether that is lifestyle guidance, a repeat test, medication adjustment, or a referral. All GetVisit reports are stored digitally and can be shared with any doctor or specialist instantly from your phone.