While providing general analysis by mass spectrometry, we specialize in trace analysis. Increasingly there is a need for analysis of small samples, which limits the amount of analyte available for detection. As part of our experience in trace analysis, we are skilled in derivatization, where an analyte is modified chemically to make it more detectable. Trace analysis also requires skills in purification from small, complex samples, a second skill in our laboratory. Finally, we possess high resolution mass spectrometers that give reliable, trace detection peaks. Thus, we have the skills and instrumentation that are important for trace analysis by mass spectrometry.