Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (6) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Spectrophotometry (SP) (1) Sample Type (-) Blood (1) (-) Serum or Plasma (1) Urine (1) Test Area (-) Exposure (2) Test Category Metals/Elements (2) Test Sub-Category Toxic Elements (2) Test Test Name 4190B Silicon, Blood 4190SP Silicon, Serum/Plasma