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) (10) Gas Chromatography (GC) (12) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (5) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (26) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Sample Type Blood (1) Hair (1) Nails (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 4190SP Silicon, Serum/Plasma 4190U Silicon, Urine