HealthWise KnowledgeBase
Kidney Biopsy
Results
A kidney Reference biopsy Opens New Window is done by inserting a long needle through the back (flank) or belly to remove a sample of kidney tissue.
Biopsy results are ready in 2 to 4 days. If tests are done to find infections, it may take several weeks for the results to be ready.
| Normal: |
The structure and cells of the kidney look normal. There are no signs of inflammation, scar tissue, infection, transplant rejection, or cancer. |
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| Abnormal: |
The sample may show signs of scarring due to infection, poor blood flow, Reference glomerulonephritis Opens New Window, a kidney infection (pyelonephritis), or signs of other diseases that affect the body, such as Reference systemic lupus erythematosus Opens New Window. |
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Kidney tissue may show tumors that were not expected, such as Wilms' tumor (which occurs in early childhood) and renal cell cancer (which is most common after age 40). |
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Kidney tissue shows signs of transplant reactions, rejection, or failure. |
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