The national public health lab that is on a mission to provide reliable, affordable,
and easy-to-use proficiency testing products with rapid access to results.


From staffing productivity and ever-evolving technology to time constraints and redirected revenue, Wisconsin State Laboratory of Hygiene (WSLH) Proficiency Testing knows you are working more strategically than ever before to break down barriers to quality patient testing.  Everyday behind the doors of Wisconsin’s public and environmental health lab, WSLH Proficiency Testing is helping labs like yours stay creative and in control of your costs without sacrificing accurate, reliable results.

Located in the beautiful capital city of Madison, Wisconsin, WSLH Proficiency Testing is a national public health lab that connects you to a team of experienced Medical Technologists and to an array of relevant resources to help you overcome quality assurance challenges.

WSLH Proficiency Testing has been building a solid foundation for clinical laboratory improvement since 1966. Our program is approved by CMS and is accepted by the College of American Pathologists (CAP), The Joint Commission, and COLA.

Questions? Contact WSLH PT by phone at (800) 462-5261 or by email at ptservice@slh.wisc.edu.


Contact WSLH Proficiency Testing – 800-462-5261 – PTService@slh.wisc.edu