Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Chemistry Analyzer (1) Gas Chromatography (GC) (3) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (17) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (5) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Sample Type Blood (1) (-) Fluid (1) Hair (1) (-) Stool (1) Tissue (1) Test Area Exposure (2) Test Category Metals/Elements (2) Test Sub-Category Macrominerals (2) Test Test Name 2551FL Magnesium - Total, Fluid 2551ST Magnesium - Total, Stool