Sandstone Diagnostics

Putting a new spin on Healthcare by bringing centrifuge technology to patients

  • Stage $500K in TTM Revenue
  • Industry Medical Devices and Equipment
  • Location Pleasanton, CA, USA
  • Currency USD
  • Founded April 2012
  • Employees 11
  • Incorporation Type C-corp
  • Website

Company Summary

Sandstone is using the power of centrifugal testing to improve healthcare. While growing distribution for our FDA-cleared Trak® Male Fertility Testing System, we are now focusing on our “zero delay plasma separation” technology that enables automated sample prep at the point of blood collection (instead of at the lab), dramatically improving sample stability and enhancing overall test sensitivity and reliability.


  • Greg J. Sommer
    Founder & CSO

    PhD-level engineer, research scientist, and project manager with 10+ years experience in delivering diagnostic technology solutions.

  • Ulrich Y. Schaff
    Founder & CTO

    Lead inventor of Sandstone's core technology; PhD-level engineer and research scientist with 10+ years experience in creating innovative biotechnology systems.

  • Sara Naab
    Founder & Director of Marketing

    Serial entrepreneur, fertility guru, workaholic, and resident extravert building Sandstone's sales channels and customer base.

  • Proven executive, board member, and investor in consumer medical devices and point-of-care diagnostics (LifeScan, Johnson & Johnson, Amira Medical, Hygieia, Astia). 2013 Female Entrepreneur of the Year (Stevie Awards), 2002 Entrepreneurial Woman of the Year (Silicon Valley Women's Fund).

  • Paul Manners

    Extensive financial, sales and general management experience in large and small healthcare companies.

  • VP Marketing

    CPG and product management from P&G, Kimberly Clark. Healthcare marketing from Medline.


  • June Fallon
    President & CEO - Fallon Biotech and Pharmacy Consulting
    Director of Male Reproductive Medicine & Surgery, Stanford University Medical Center

Previous Investors

  • Founders
    Accredited Family
    Alchemist Investment Fund (Angels)
  • June Fallon
    Tom Payne
    Life Science Angels
  • Sand Hill Angels
    Astia Angels
    Stanford StartX Fund

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