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  4. eGFR Blood Test: Assessing Your Kidney Function

eGFR Blood Test: Assessing Your Kidney Function

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The estimated glomerular filtration rate (eGFR) is a blood test that evaluates kidney function by estimating how well your kidneys filter waste and toxins from your blood. eGFR is calculated using your blood creatinine levels, age, gender, and race. A normal eGFR is typically 90 or higher. Values between 60 and 89 may indicate mild kidney damage, while values below 60 suggest more significant impairment, potentially leading to chronic kidney disease (CKD). The eGFR test is crucial for early detection and management of kidney health issues, helping to prevent further damage and complications.

  • What is eGFR?
    • The estimated glomerular filtration rate (eGFR) is a key measure of how well your kidneys are functioning.
    • It assesses the amount of blood the kidneys filter per minute, providing insight into kidney health.
  • How is eGFR Calculated?
    • eGFR is derived from blood creatinine levels, factoring in age, gender, and race.
    • Creatinine is a waste product from muscle metabolism, and high levels indicate reduced kidney filtration efficiency.
  • Normal Values of eGFR:
    • 90 or higher: Normal kidney function.
    • 60 to 89: Mildly reduced kidney function, may suggest early kidney damage.
    • Less than 60: Indicates potential chronic kidney disease (CKD); further testing and monitoring may be required.
    • Less than 15: Severe kidney damage, potentially leading to kidney failure, requiring dialysis or transplantation.
  • Why is eGFR Important?
    • Early detection of decreased kidney function can help slow the progression of kidney disease.
    • Monitoring eGFR regularly helps guide treatment plans for individuals with risk factors like diabetes, hypertension, or family history of kidney disease.
    • Maintaining optimal eGFR values is essential for avoiding complications such as high blood pressure, anemia, and cardiovascular disease.
  • Interpreting Results:
    • A declining eGFR signals worsening kidney function and may require lifestyle changes or medical intervention.

c) Recommended Tests

  1. Creatinine: This test is often paired with eGFR as creatinine levels are a key component in calculating the eGFR. Monitoring creatinine can help detect early kidney issues.
  1. Complete Blood Count (CBC): Individuals with kidney disease may develop anemia. A CBC test monitors red blood cells, white blood cells, and platelets, helping to assess overall health and detect complications from kidney disease.

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