Nerve Biopsy - General Instructions
The University of Iowa Department of Pathology provides a full range of Anatomic Pathology consultation services. We provide advanced technologies and professional expertise. Our faculty are available for consultation for all referred materials. Please refer to
Clinical Consultants for details.
A preliminary diagnosis can be obtained by calling Steven A. Moore, M.D., Ph.D., at 319-384-9084. Final reports are faxed and final copies are mailed. Written reports indicate patient information, accession number, slide/blocks examined, stains performed and interpretation.
How to send a Nerve Biopsy:
1. Complete the Anatomic Pathology Consult Requisition. Questions about completing the requisition can be directed to:
University of Iowa Diagnostic Laboratories (UIDL) at 319-384-7212 or toll free at 866-844-2522.
A completed requisition must accompany all requests. It should contain: the patient name, identification number, date of biopsy, date of birth, male/female, tissue source, biopsy site, clinical history and differential diagnosis if known.
2. Specimen Preparation: It is important that the nerve biopsy be placed directly into the appropriate fixative immediately after removal in the operating room. This will help prevent autolysis and air-drying artifact.
- Obtain a nerve biopsy at least 4-6 cm long
- Divide the specimen into two pieces; one should be 2-3 cm long for glutaraldehyde fixation.
- Attach a 1 gram weight to one end of the specimen to be fixed in glutaraldehyde. Attach a thread or suture to the other end (see figure below).
- Suspend the specimen in 2.5% buffered ISOSMOLAR glutaraldehyde. Isosmolar fixative is VERY IMPORTANT to prevent shrinkage artifacts.
- Allow nerve to fix overnight in an upright position with tension from the weight. The specimen should be refrigerated during initial fixation and during storage prior to shipment.
- Place the remaining piece in 10% neutral buffered formalin. Maintain at room temperature.
- Label the specimens with the patient name, identification number, tissue source, and date.
- Wrap the containers with Parafilm to prevent leakage.
- Place containers in separate double plastic bags for shipment.
3. Specimen Packaging
- Place the requisition on the outside of the double bagged specimens.
- Affix "formaldehyde precaution" label on bag.
- Placed the double-bagged specimen into a box (primary container) with adequate absorbent material in case of leakage.
- Securely seal the primary container.
- Place the primary container in a secondary shipping container, which should also contain enough absorbent material to prevent any leakage from escaping outside the container.
- These specimens can be sent by our Courier services within our service area or by overnight express airmail.
- Ship at ambient temperature. These tissues SHOULD NOT freeze.
4. Specimen Transportation
UI Diagnostic Laboratories can usually provide for specimen transport either through our own courier services or through other transportation providers such as overnight carriers. If you need assistance or information in transporting specimens to our laboratories, please contact
UIDL Client Services and a representative will provide assistance in determining the most appropriate shipping arrangement.
319-384-7212 (local)
1-866-844-2522 (toll free)
Shipping address:
University of Iowa Healthcare
UI Diagnostic Laboratories
200 Hawkins Drive, Room 5231 RCP
Iowa City, IA 52242-1087