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University of Wisconsin Crest

WSLH Proficiency Testing

Wisconsin State Laboratory of Hygiene

Privacy Policy

Who we are

WSLH Proficiency Testing is the only proficiency testing provider that is a part of a public health lab, the Wisconsin State Laboratory of Hygiene (WSLH).  As a division of WSLH, the mission of WSLH Proficiency Testing is improve laboratory quality through on-trend, educational outreach and clinical proficiency testing programs. WSLH PT is also an affiliate of the University of Wisconsin-Madison, under the School of Medicine and Public Health. WSLH Proficiency Testing is approved by CMS, and accepted by CAP, COLA, and The Joint Commission.


WSLH Proficiency Testing provides reliable, affordable, and easy-to-use proficiency testing products with rapid access to results. WSLH PT provides competitively-priced clinical proficiency testing for a wide range of analytes. Laboratories can receive additional service year-round through off-schedule ordering, linearity and calibration verification products, online training and competency programs, and evaluation samples.


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