Sandstone is an innovative technology and healthcare start-up company producing medical products and research tools designed to improve healthcare by bringing the point of care closer to the patient, increasing access, reducing costs, improving sample preparation, and enhancing performance of bodily fluid analyses including blood and semen.  

Sandstone specializes in innovation that reduces the size and power requirements for applying centrifugal force to separate, stabilize, and analyze clinical samples.  Advancements in microfluidics and mesofluidics work hand in hand with the centrifuge innovation to create CentriFluidics™. CentriFluidics is a new capability that combines the power of innovation in both of these fields transforming the analysis process and enabling cost savings, performance improvement, and access to health care to millions who are not reachable today.

Sandstone first commercialized its CentriFluidic technology with the Trak Male Fertility Testing System –  an FDA approved at-home consumer device that can be mass produced and marketed to the millions of people trying to start their family. Trak is sold in multiple channels and has proven that microfluidic and mesofluidic consumables can be mass produced in consumer friendly, at-home use products designed to extend access to health information and care.

The Sandstone Way

Sandstone is made of an incredible group of scientists, researchers, marketers, and professionals that believe in challenging the status quo and acting with a sense of urgency to solve some of healthcare’s biggest challenges with improvement in technology and by empowering patients and caregivers.  We have a track record of success, demonstrated agility, and an approach to partnership that places the needs of our customers first, ahead of our own to create a model of shared success.


Karen Drexler

Greg Sommer

Greg Sommer
Founder and CSO

Ulrich Schaff

Ulrich Schaff
Founder and CTO

Brian Awabdy

Brian Awabdy
VP Operations & QA

Dave Seltzer

Dave Seltzer
Finance Director

Deb Corazzelli

Debra Corazzelli

Board of Directors

Karen Drexler, CEO

Greg SommerGreg Sommer, CSO

Bob EastonBob Easton
Co-Chairman at Bionest Partners

Beto PallaresBeto Pallares
Managing Director, Hunt Family Holdings

Faith CharlesFaith Charles, JD
Partner, Corporate Transactions & Securities Practice/Chair, Life Sciences Group at Thomson Hine LLP

Scientific Advisory Board

Michael Eisenberg, MD
Director of Reproductive Medicine, Stanford University Medical Center

Jamin Brahmbhatt, MD
Co-Director, PUR Clinic; Co-Founder, Drive for Men’s Health

Joseph Alukal, MD
Clinical Associate Professor, NYU Langone Health Department of Urology

Priya BalachandranPriya Balachandran
Chief Marketing Officer at Applied Silver, Inc.

Steven LipkinSteven Lipkin, MD PhD
Professor of Medicine, Clinical Genetics, Weill Cornell Medicine

Elizabeth Hutt PollardElizabeth Hutt Pollard
Executive Chair, Applied Silver, Inc.

  • NIH SBIR #1R43AI108206-01A1 “Ultra-Sensitive Point-of-Care Toxin Diagnostics” (PI Greg Sommer, PhD)
  • NIH SBIR #1R43HD76536-01A1 “Rapid, Point-of-Care Diagnosis of Neonatal Sepsis” (PI Greg Sommer, PhD)
  • NIH R21 #1R21HD094322-01 “Feasibility of in-home semen testing in a North American preconception cohort study” (PI’s Lauren Wise, SCD & Michael Eisenberg, MD)