Wisconsin’s Public, Environmental and Occupational Health Laboratory Since 1903 PFAS Compliance Testing COVID-19 Information about Wastewater Surveillance Avian Flu WSLH NewsNovember 18, 2025Thanksgiving 2025 Holiday HoursThe Wisconsin State Laboratory of Hygiene will be closed on Thursday, November 27, 2025 for the Thanksgiving holiday. Our Specimen Receiving departments will observe the following hours of operation for […]October 02, 2025Rudolph Johnson to become next director of the Wisconsin State Laboratory of HygieneRudolph Johnson, a toxicologist with national leadership experience in emergency response and measuring human exposure to toxic substances, will be the next director of the Wisconsin State Laboratory of Hygiene […]September 15, 2025Notice of Discontinuation of Bordetella culture - Effective Sept. 15, 2025As of September 15, 2025, the Wisconsin State Laboratory of Hygiene will no longer perform Bordetella culture testing (WSLH test code MP00623). This decision was made due to very low […]August 13, 2025Labor Day 2025 Holiday HoursPlease note the following changes to the Wisconsin State Laboratory of Hygiene’s operations for the Labor Day holiday. As always, if you have an off-hours emergency, please call the WSLH […]July 03, 2025Wastewater-Based Epidemiology Public Forum - July 9, 2025Join the Water Environment Federation and the New York and Wisconsin wastewater public health monitoring programs to: Learn how sewage can help protect public health Hear from national and local […] WSLH News