How to Read and Understand Kidney Function Lab Results: GFR, Creatinine & BUN Explained

Learn how to read kidney function lab results including GFR, creatinine, and BUN levels to assess kidney health accurately.

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To read kidney function lab results, focus on key markers: Glomerular Filtration Rate (GFR) indicates kidney health, with higher numbers being better. Creatinine levels reflect kidney function, with lower levels suggesting better function. Blood Urea Nitrogen (BUN) shows how well your kidneys are processing waste; lower numbers are preferable. Also, assess electrolytes, protein, and blood cell counts for a comprehensive view. Always compare these results to the reference range provided by the lab and consult with a healthcare professional for accurate interpretation.

FAQs & Answers

  1. What is a normal GFR range for kidney function? A normal GFR is typically above 90 mL/min/1.73 m², indicating healthy kidney function. Lower values may suggest impaired kidney function.
  2. What do high creatinine levels indicate? High creatinine levels can indicate reduced kidney function or kidney impairment, as the kidneys are less able to clear creatinine from the blood.
  3. How is Blood Urea Nitrogen (BUN) used to assess kidney health? BUN measures waste in the blood; elevated BUN levels often indicate that kidneys are not properly filtering waste from the bloodstream.
  4. Should I compare my kidney lab results to reference ranges? Yes, always compare your results to the laboratory’s reference ranges and discuss findings with a healthcare professional for accurate interpretation.

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