Wisconsin State Laboratory of Hygiene Proficiency Testing is located in the beautiful capital city of Madison, Wisconsin, with offices just across the hall from one of the few CDC-appointed national laboratories for influenza, vaccine preventable disease, and antimicrobial resistance monitoring. WSLH PT is also a part of the University of Wisconsin-Madison, a major research university and the site of early discoveries related to Vitamin D, the link between goiter and iodine, stem cell research, and the development of the blood thinner warfarin.

The mission of WSLH PT is to make laboratories’ proficiency journeys easier. As part of a public health lab ourselves, WSLH PT also promotes public health to laboratories nationwide, and has been doing so since 1966.

We have customers in all fifty United States, Mexico, Canada, Saudi Arabia, Malaysia, China, and other countries across the globe. WSLH PT is the only provider in the United States for rabies PT samples. WSLH PT would love to partner with your lab, and assist you in producing quality results for patients.

Our program is approved by CMS and is accepted by the College of American Pathologists (CAP), The Joint Commission and COLA. We provide proficiency testing for a wide range of analytes, and our products are competitively priced.


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