The liquid chromatography-mass spectrometry (LC-MS) screen offers possibility of detecting potential toxicants in a sample. Data is matched to a library containing more than 9 million spectra. The LC-MS screen is capable of detecting a wide variety of environmental contaminants and toxicants as well as drugs (antibiotics, anthelmintics, growth promoters, and ionophores). If the specimen of interest is not listed or if you have questions regarding suspected compounds, please contact the lab for further information. This test will not detect chlorinated pesticides and heavy metals.