“Your Pathway to Proficiency Testing Success”

Why Choose WSLH Proficiency Testing

  • Approved by CMS
  • Accepted by CAP – COLA – The Joint Commission
  • Providing services to more than 4,000 customers worldwide
  • Over 180 different products in a wide variety of subspecialties
  • Flexible enrollment and reasonable prices
  • High-quality samples with proven reliability
  • Exceptional customer service provided by Medical Technologists and Clinical Laboratory Scientists


  • NEWWSLH PT Winter 2016 Newsletter icon-pdf
    • Fresh Look for PT Central
    • Data Submission Reports
    • Program Highlights
    • Quality Management Report (QMR)
    • PT Evaluation Reports Available via Email