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Volume 32, Supplement –Summer 2026
SUPPLEMENT ISSUE
Other
Implementation and Early Outcomes of Laboratory Proficiency Testing Program for National Wastewater Surveillance System, United States, 2024
Figure 1

Figure 1. Laboratory workflows represented by the participants of the first 2 rounds of the Wisconsin Wastewater Monitoring Program wastewater proficiency testing program in study of implementation and early outcomes of laboratory proficiency testing program for National Wastewater Surveillance System, United States, 2024. Each symbol represents a single laboratory’s wastewater processing workflow (some laboratories tested multiple workflows). Laboratories are separated by the wastewater fraction processed (y-axis). Bold outline indicates new participants in round 2. Asterisks indicate laboratories that implemented a method change from round 1 to round 2. Nanotrap (Ceres Nanosciences, Inc., https://www.ceresnano.com); InnovaPrep (InnovaPrep LLC, https://www.innovaprep.com); Direct Capture (Promega, https://www.promega.com); GeneXpert (Cepheid, https://www.cepheid.com); Thermo MagMAX (Thermo Fisher Scientific, https://www.thermofisher.com); QIAGEN AllPrep Power Viral (QIAGEN, https://www.qiagen.com); Promega HT Env Kit (Promega, https://www.promega.com); Zymo Quick RNA-Viral (Zymo Research, https://www.zymoresearch.com); Beckman RNAdvance Viral (Beckman Coulter, Inc., https://www.beckman.com); Maxwell RSC Enviro TNA Kit (Promega, https://www.promega.com); QIAmp Viral (QIAGEN, https://www.qiagen.com); Revvity Chemagic Viral DNA/RNA 300 Kit (Revvity, Inc., https://www.revvity.com).