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University of Wisconsin Crest

WSLH Proficiency Testing

Wisconsin State Laboratory of Hygiene

Contact Us

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Get in touch WITH WSLH PT

Want to get in touch with WSLH Proficiency Testing? 
We’d love to hear from you. Here’s how you can reach us:

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Office Hours

Monday through Friday
8:00AM to 4:30PM (CT-Chicago)
Closed on all major holidays

Direct Contact

Phone: (800) 462-5261
Email: ptservice@slh.wisc.edu

Mailing Address

WSLH Proficiency Testing
2601 Agriculture Drive 
Room 233
Madison, WI 53718

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