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Test Mnemonic:
Specimen Requirements:

Special instructions:

1. Obtain transport medium from laboratory prior to biopsy.

2. Contact Renal Pathologist on call.

3. Patient information form must be completed.

4. Request must be placed and ordered in Beaker and must include the specimen source,  clinical history and diagnosis.

Test Included:

Gross and microscopic examination with diagnosis; light, immunofluorescence and electron microscopy of kidney.


Needle biopsy of kidney.


For light microscopy: Fixative is fomraldehyde or Zamboni solution.

For fluorescence microscopy: transport medium is Michel's solution/fixative.

For electron microscopy: fixative is 3% glutaraldehyde or Zamboni solution.


Needle biopsy of kidney is placed in appropriate fixatives or transport media.  Specimen should be labeled with patient's first and last names and unit history number and delivered immediately to Surgical Pathology Laboratory, room 2.186 John Sealy Annex.  Short term storage at 4C if necessary.  DO NOT FREEZE AND DO NOT PLACE IN FORMALIN.

Causes for Rejection:

Specimen placed in formalin or other fixative, sample not stored appropriately, insufficient identification, order not completed in Beaker.  

Reference Range:
Turnaround Time:

Transplant one day; Routine 3 days.


The renal pathologist on call MUST be contacted when kidney-renal biopsies are pending.  Monday-Friday 8:00 AM to 5:00 PM.  Also available after hours, weekends and holidays.


Renal biopsy

CPT 4 Code:


When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
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