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    What is Estimated Glomerular Filtration Rate (eGFR) Test?

    An Estimated Glomerular Filtration Rate (eGFR) test is a blood test used to evaluate kidney function by calculating how much blood your kidneys filter each minute. The kidneys, located on either side of your spine near your waist, contain microscopic filtering units known as glomeruli. These glomeruli work to remove waste products and excess fluids from your blood, excreting them through urine.

    When kidney function is compromised, often due to kidney disease, the filtering process becomes less effective. A reduced eGFR may signal kidney failure, potentially necessitating treatments such as dialysis or a kidney transplant.

    The eGFR test is performed for various reasons, including:

    • Detecting kidney disease in individuals without symptoms

    • Identifying kidney disease in those exhibiting symptoms

    • Determining the stage of kidney disease

    • Monitoring chronic kidney disease (CKD) to assess treatment effectiveness

    • Assessing kidney health in people taking medications that could harm the kidneys

    • Evaluating kidney function before initiating therapies that may impact the kidneys

    This test plays a crucial role in the early identification, diagnosis, and management of kidney-related conditions.

    Estimated Glomerular Filtration Rate (eGFR) Test Parameters

    The estimated glomerular filtration rate (eGFR) test measures a specific parameter: the rate at which your kidneys filter blood, expressed as the volume of blood filtered per minute.

    This test provides valuable insights into kidney function. While the glomerular filtration rate (GFR) can be directly measured, this approach is complex and not routinely done. Instead, eGFR is calculated using a blood test to measure creatinine, a waste product generated during normal muscle activity. High levels of creatinine in the blood may indicate compromised kidney function.

    To calculate eGFR, factors such as age, weight, height, and sex are combined with creatinine levels in a formula. These additional inputs account for variations in creatinine production caused by differences in body size, diet, and activity, ensuring a more precise estimate.

    Cystatin C, another marker for calculating eGFR, is a protein produced by cells throughout the body. Unlike creatinine, cystatin C levels are unaffected by muscle mass, age, or diet, potentially making it a better indicator for certain individuals. Researchers are also studying whether combining creatinine and cystatin C measurements could provide a more thorough evaluation of kidney health.

    The eGFR test plays a crucial role in evaluating kidney health and detecting potential problems early.

    Estimated Glomerular Filtration Rate (eGFR) Test Preparation

    Before booking an Estimated Glomerular Filtration Rate (eGFR) test in Hyderabad, consider the following key details:

    • Prerequisites

    Fasting is not required before taking an eGFR test.

    • Best Time to Get Tested

    The test can be conducted at any time of the day.

    • Who Should Get This Test

    This test is recommended for individuals at risk of kidney disease, such as those with diabetes, high blood pressure, or a family history of kidney-related conditions.

    • Cautions Before Taking This Test

    Generally, no special preparation is needed. However, consult your physician beforehand to confirm if this test is suitable for you.

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

    The eGFR test is a vital tool for detecting the early stages of chronic kidney disease (CKD), which often progresses without noticeable symptoms initially. This test is commonly advised for individuals with a higher risk of developing CKD. Key risk factors include:

    • Diabetes : A leading cause of kidney damage over time.

    • High Blood Pressure : Can place strain on the blood vessels in the kidneys.

    • Overweight or Obesity : Excessive weight can negatively affect kidney function.

    • Age Over 60 : Older adults are more susceptible to kidney problems.

    • Family History of CKD or Kidney Failure : A genetic link can increase CKD risk.

    CKD often develops due to a combination of physical health issues, environmental factors, and social conditions.

    By the time symptoms appear, CKD is often in its advanced stages. Warning signs of progression may include:

    • Changes in urination patterns (frequent or infrequent)

    • Persistent itching

    • Unexplained fatigue

    • Swelling in the arms, legs, or feet

    • Nausea or vomiting

    • Muscle cramps

    • Reduced appetite

    The eGFR test is essential for monitoring kidney health and identifying potential issues before they worsen.

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

    The cost of the eGFR test in Hyderabad is ₹ 550. This price includes home sample collection, with the sample collected within 60 minutes of confirmation.

    Yes, Orange Health Labs offers home sample collection for the eGFR test in Hyderabad. Samples are collected within 60 minutes of booking, depending on slot availability.

    The eGFR test assesses kidney function and aids in the early detection of kidney disease in individuals at risk.

    No fasting is needed before taking the eGFR test.

    To book a blood test or health checkup with Orange Health Labs, follow these steps:

    • Find the Test: Look up the Estimated Glomerular Filtration Rate (eGFR) test in Hyderabad and navigate to Orange Health’s dedicated page.

    • Review and Verify: Choose the eGFR test, check any prerequisites, provide your location details, and select a suitable time for sample collection.

    • Sample Collection: A trained eMedic will visit your home to collect the sample at the chosen time.

    • Laboratory Processing: The collected sample will be analysed at our ICMR-certified and NABL-accredited laboratory.

    • Receive Results: The test report will be shared via email or WhatsApp within 6 hours and can also be accessed through our mobile application.

    Normal eGFR levels are 90 mL/min/1.73 m² or above. Levels between 60-89 mL/min indicate mildly reduced kidney function, while lower values reflect more serious impairment.

    Reports are typically available online within 6 hours after sample collection, which occurs 60 minutes after booking.

    The frequency of the test depends on your risk factors and condition, as assessed by your doctor. Follow their advice on how often to repeat the test.

    This test evaluates a single parameter: the volume of blood filtered by the kidneys per minute.

    Orange Health offers the fastest Estimated Glomerular Filtration Rate (eGFR) test in Hyderabad, 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 Banjara Hills, Jubilee Hills, Gachibowli, Madhapur, Hitech City, Kondapur, Begumpet, Somajiguda, Ameerpet, Panjagutta, Kukatpally, Miyapur, Manikonda, Secunderabad, Tarnaka, Abids, Koti, Mehdipatnam, Dilsukhnagar, Uppal, LB Nagar, Nallagandla, Nizampet, Attapur, Malkajgiri.

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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