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  • Mass spectrometers (MS) designed to identify and quantify compounds in the microgram to nanogram range, usually having mass ranges between one and 4,000 atomic mass units (amu). These devices typically include magnetic sector, ion trap, or quadrupole mass analyzers. Laboratory mass spectrometers are frequently used coupled with a gas or liquid chromatograph, or in tandem with another MS. Such combined systems are used in clinical laboratories to determine substances in body fluids found in pathologic conditions (e.g., ketoacidosis, cancer), to verify results of screening immunoassay tests (e.g., to identify drugs of abuse), and to identify other substances (e.g.., toxins, lipids, trace metals).
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