Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (7) Gas Chromatography (GC) (9) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (20) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) (-) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (2) Sample Type (-) Urine (2) Test Area Exposure (2) Test Category Metals/Elements (2) Test Sub-Category (-) Other (2) Toxic Elements (10) Trace Elements (1) Test Test Name 4180U Selenium, Urine 4370U Thallium, Urine