The WSLH provides analysis of most ultra-trace elements, metals, and low-level mercury (both total and methyl) to meet the needs of university and governmental agency researchers. The WSLH can provide a full package from ultra-trace metals sampling using “Clean Sampling Protocol,” pioneered by the University of Wisconsin, for analysis in our state-of-the-art Trace Element Clean Laboratory (TECL) using standard protocols and EPA 1600 series methods to generate data with rigorous QA/QC checks and review. WSLH staff will work with prospective researchers to identify the appropriate analytical techniques required to meet the data quality objectives desired. We analyze both clinical (blood, urine) and environmental (water, soil, aerosol, tissue) samples.