A kidney biopsy may be done to:

  • Diagnose a kidney problem that can't otherwise be identified
  • Help develop treatment plans based on the kidney's condition
  • Determine how quickly kidney disease is progressing
  • Determine the extent of damage from kidney disease or another disease
  • Evaluate how well treatment for kidney disease is working
  • Find out why a transplanted kidney isn't working properly

Your doctor may recommend a kidney biopsy based on the results of blood or urine tests that show:

  • Blood in the urine (hematuria) that's localized to the kidney
  • Protein in the urine (proteinuria) that's excessive, rising or accompanied by other signs of kidney disease
  • Problems with kidney function, leading to excessive waste products in the blood

Not everyone with these problems needs a kidney biopsy. The decision is based on your signs and symptoms, test results, and overall health.

Jun. 19, 2012