"Providing Proficiency Testing Services to
Clinical and Hospital Laboratories since the 1960s"

• Available Nationwide
• Clinical Laboratory Accreditation Acceptance:
• College of American Pathologists ( CAP 2008 Approved Analyte List )
• CMS
• COLA
• The Joint Commission (formerly JCAHO)
• Superior Customer Service and Response
• Products for All Major Specialities
• Competitive Prices
• Multiple Order Options to Best Meet Customer Needs

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 WSLH PT Updates

• 2008 Clinical Catalog Now Available!



• 2008 Environmental Catalog Now Available 



• General Information and Policies