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    What is Estimated Glomerular Filtration Rate (eGFR) Test?

    An Estimated Glomerular Filtration Rate (eGFR) test is conducted to assess kidney function by calculating how much blood your kidneys filter per minute. Located on both sides of the spine near the waist, the kidneys house small filtering units called glomeruli. These structures remove waste and excess fluids from the bloodstream, which are eliminated via urine.

    Impaired kidney function, often due to conditions like kidney disease, hampers this filtration process. A low eGFR can indicate kidney failure, necessitating treatments such as dialysis or transplantation.

    The eGFR test is typically used for:

    • Screening for kidney disease in those without symptoms

    • Diagnosing kidney disease in symptomatic individuals

    • Identifying the stage of kidney disease progression

    • Monitoring chronic kidney disease (CKD) and treatment outcomes

    • Checking kidney function in people using potentially harmful medications

    • Assessing kidney health prior to therapies that could impact kidney performance

    This test is essential for early detection, accurate diagnosis, and effective management of kidney-related conditions.

    Estimated Glomerular Filtration Rate (eGFR) Test Parameters

    The eGFR (estimated glomerular filtration rate) test measures the kidneys' ability to filter blood, reported as the volume of blood filtered per minute.

    This test is a fundamental measure of kidney function. While glomerular filtration rate (GFR) can be directly measured, it is a complex procedure not commonly used in clinical settings. Instead, eGFR is calculated based on a blood test measuring creatinine, a waste product of muscle activity. Higher-than-normal creatinine levels in the blood may indicate reduced kidney function.

    Factors such as age, sex, weight, and height are included alongside creatinine levels to enhance the accuracy of the eGFR calculation. These factors account for variability in creatinine production due to differences in diet, body size, and activity levels.

    Cystatin C, a protein produced by nearly all cells in the body, can also be used to calculate eGFR. Unlike creatinine, cystatin C levels remain unaffected by muscle mass, diet, or age, making it a better option for certain populations. Studies are investigating whether combining creatinine and cystatin C measurements can provide a more detailed picture of kidney health.

    The eGFR test remains a cornerstone in monitoring kidney health and identifying issues early.

    Estimated Glomerular Filtration Rate (eGFR) Test Preparation

    If you’re planning to take an Estimated Glomerular Filtration Rate (eGFR) test in Delhi, here are some important factors to consider:

    • Prerequisites

    You don’t need to fast before undergoing this test.

    • Best Time to Get Tested

    The eGFR test can be performed at any time of the day.

    • Who Should Get This Test

    Individuals at higher risk for kidney disease—such as those with diabetes, high blood pressure, or a family history of kidney conditions—should consider this test.

    • Cautions Before Taking This Test

    Although no preparation is usually required, consulting with your doctor beforehand is recommended to confirm the test’s suitability.

    Why Take the Estimated Glomerular Filtration Rate (eGFR) Test?

    The eGFR test plays a critical role in identifying chronic kidney disease (CKD) at an early stage when symptoms may not yet be evident. This test is often recommended for those at higher risk of CKD due to factors such as:

    • Diabetes : A common cause of kidney damage.

    • High Blood Pressure : Increases stress on kidney blood vessels.

    • Excess Weight : Can impair kidney function.

    • Age Above 60 : Kidney-related problems become more prevalent with age.

    • Family History of CKD or Kidney Failure : Genetic predisposition can heighten CKD risk.

    The development of CKD often stems from a mix of physical health concerns, environmental exposures, and social determinants.

    By the time symptoms appear, CKD is usually in later stages. These symptoms can include:

    • Changes in urination patterns (too frequent or too rare)

    • Ongoing itching

    • Severe fatigue

    • Swelling in the extremities, such as the hands or feet

    • Nausea and vomiting

    • Muscle pain or cramps

    • Loss of appetite

    The eGFR test is a valuable tool for early diagnosis and monitoring of kidney health.

    FAQs on Estimated Glomerular Filtration Rate (eGFR) Test in Delhi

    The eGFR test costs ₹ 550 in Delhi. This fee includes a home sample collection, with the sample taken within 60 minutes after booking confirmation.

    Yes, Orange Health Labs provides eGFR test sample collection from home in Delhi. Samples are collected within 60 minutes, depending on availability.

    This test measures kidney function and helps identify kidney disease in high-risk individuals.

    No fasting is required before taking the eGFR test.

    Here’s how to book a blood test or health checkup on Orange Health Labs:

    • Find the Test: Search for the eGFR test in Delhi and select Orange Health’s test page.

    • Review and Verify: Pick the eGFR test, check for any instructions, provide your location, and choose a preferred time slot for home collection.

    • Sample Collection: A certified eMedic will visit your location at the agreed time to collect the blood sample.

    • Laboratory Processing: The sample will be processed at our ICMR-certified, NABL-accredited lab.

    • Receive Results: Test reports will be shared within 6 hours through email, WhatsApp, or our mobile app.

    Normal eGFR levels are 90 mL/min/1.73 m² or higher. Levels from 60-89 mL/min show mild kidney dysfunction, while lower levels may indicate significant kidney issues.

    Reports are usually ready online within 6 hours of sample collection, which happens 60 minutes post-booking.

    The frequency is guided by your doctor, who assesses your condition and risk factors. Follow their instructions.

    The test evaluates only one parameter: the volume of blood filtered by your kidneys every minute.

    Orange Health offers the fastest Estimated Glomerular Filtration Rate (eGFR) test in Delhi, delivered conveniently to your home without needing a physical visit to the laboratory. Localities served for home sample collection include but are not limited to Connaught Place, Chandni Chowk, Karol Bagh, Lajpat Nagar, South Extension, Greater Kailash, Hauz Khas, Saket, Vasant Kunj, Dwarka, Rohini, Pitampura, Janakpuri, Rajouri Garden, Mayur Vihar, Preet Vihar, Shahdara, Laxmi Nagar, Green Park, Safdarjung Enclave, Defence Colony, New Friends Colony, Kalkaji, Malviya Nagar, Nehru Place.

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    References

    1. MedlinePlus. Glomerular Filtration Rate (GFR) Test: MedlinePlus Lab Test Information [Internet].  Available from:  https://medlineplus.gov/lab-tests/glomerular-filtration-rate-gfr-test/%5C
    2. Cleveland Clinic. Estimated Glomerular Filtration Rate (eGFR): Definition & Results [Internet].  Available from:  https://my.clevelandclinic.org/health/diagnostics/21593-estimated-glomerular-filtration-rate-egfr
    3. National Kidney Foundation. Estimated Glomerular Filtration Rate (eGFR) [Internet].  Available from:  https://www.kidney.org/kidney-topics/estimated-glomerular-filtration-rate-egfr