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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Renal Biopsy

Test Code(s): PATHS / HCPATHS

CPT Code(s): 88305, 88313, 88346 x 6, 88348

Test Description: Test Component:

Light microscopy, histochemical special stains, immunoflourescence, electron microscopy

Request Form: Tissue Exam Request Form UWH #33

Days Performed: Mon-Fri.

Turnaround Time: Routine: 1 - 5 days.

Specimen Requirements

Specimen: Tissue

Collection Instructions: A renal technologist attends the biopsy procedure to determine the adequacy of the specimen. Procedures are performed Monday through Friday between 8:00 am and 2:00 pm. The service or unit performing the procedure is required to notify the UWHC Surgical Pathology Lab, (608)263-8453, or the UWHC Renal Lab, (608)263-8442, that a biopsy is scheduled. The renal laboratory should be notified 24 hours in advance of all scheduled kidney biopsies.

Note:  The on-call resident/staff pathologist should be notified if a biopsy is to be performed on a weekend or holiday. The pathologist will coordinate with the appropriate staff to assure proper processing.

Collection Container: Also Acceptable: See collection instructions.

Specimen Transport: Specimens referred to the UWHC Renal Pathology Laboratory from outside UWHC should contact the laboratory at (608)263-8442 to receive shipping information and transport materials. Please notify the laboratory before the specimen is shipped to assure proper follow up.


The renal laboratory provides processing of native kidney and allograft renal biopsies. Light microscopy, special stains; immunofluorescence and electron microscopy services are provided as determined by the renal pathologist.

Kidney Biopsy

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