Know Your Blood Parameter: eGFR

1. Parameter Name 

   eGFR (Estimated Glomerular Filtration Rate)

   
   

2. Test Type 

   Blood (calculated from creatinine)

   
   

3. Normal Range 

   ≥ 90 mL/min/1.73 m² (with no kidney damage).

   
   

4. High Levels Indicate 

   Not clinically relevant (may reflect overestimation in muscle wasting).

   
   

5. Low Levels Indicate 

   Reduced kidney filtration, indicating CKD stages 1–5 based on value.

   
   

6. Why It's Tested 

   Best marker to evaluate kidney function and classify CKD stages.

   
   

7. Associated Symptoms (if abnormal) 

   Often silent; may show fatigue, edema, nausea in later stages.

   
   

8. What To Do If Abnormal 

   Monitor trends, control BP/sugar, consult nephrologist if < 60 mL/min.

   
   

9. Common Conditions Related 

   CKD, diabetes-related nephropathy, hypertension

   
   

10. Nutrition or Lifestyle Connection 

    Low-sodium, renal-friendly diet, protein moderation, stay active.

    
    

11. References (APA Format) 

    • National Kidney Foundation. (2023). eGFR guidelines. 

    • MedlinePlus. (2023). eGFR test. 

    • KDIGO Guidelines. (2022). CKD evaluation and management.