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Test Code SP006 Renal Biopsy

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Electron Microscopy/Immunofluorescence/Light Microscopy

Note: Also see #SP004 Immunofluorescence, Tissue.

Specimen Requirements

Specimen Type: Biopsy

Container/Tube: Container with Michels’ fixative

Specimen Volume: Entire biopsy

Collection Instructions:

1. Place biopsy in container with Michels’ fixative.

Note: Biopsies are only stable in Michels’ fixative for 24 hours.

2. Kidney biopsies must have cortex containing adequate glomeruli for processing.

3. Label container with patient’s name, date of birth, Social Security number, date of collection, and type of specimen.

Additional Information: Biopsy site and clinical diagnosis are required.

Forms: Surgical Pathology Tissue Exam Request in Special Instructions

Day(s) Test Set Up

Monday through Friday

Turnaround Time:
STAT: not available
Routine: 3 to 5 working days

Reference Values

An interpretive report will be provided.

Test Classification and CPT Coding

88305-Kidney biopsy
88346-Immunofluorescence, each
88348-Electron microscopy

88312-Special stain group 1, each (if appropriate)

88313-Special stain group 2, each (if appropriate)

Note: Professional charges may be applied.

Additional Information

For BJH Laboratory Use Only

Laboratory Processing Instructions:
Test performed in BJH Surgical Pathology.

Specimen Transport Temperature

Ambient/Refrigerate NO/Frozen NO