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Many commercial labs allow shipment of biopsies in aqueous-based fixatives. Up to 40% of these biopsies freeze in shipment, resulting in freezing damage artifact and substantial loss of nerve fibers.

Losing nerve fibers may lead to a false diagnosis of peripheral neuropathy.

FinalFix is a proprietary formula specifically formulated to eliminate shipping damage during shipment.

Benefits of FinalFix

Benefits of FinalFix include:

  • Protect your patient samples
  • A solution that fixes & cryoprotects samples in ONE easy step
  • Same day shipping without compromising sample quality



Normal—Frozen in fix*

Cutaneous Normal Final

Normal—Frozen in FinalFix**

Cutaneous Normal FinalFix
No nerve fiber loss


Our laboratory fixative, tested over time, allows centers to safely ship biopsies in fixative, without freezing damage artifact.



Cutaneous Nerve Laboratory
Department of Neurology
University of Utah Health
175 N. Medical Drive East, Rm 3335
Salt Lake City, UT 84132

Hours of Operation
Monday-Friday: 8:00 a.m.–4:30 p.m. MT
Saturday-Sunday: Closed
Holidays Closed: New Year’s Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Pioneer Day (July 24), Labor Day, Thanksgiving Day, Day after Thanksgiving, and Christmas Day

Phone: 801-585-2461
Fax: 801-213-0861

Cutaneous Nerve Lab Brochure

Order a Biopsy Kit