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) (33) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (120) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (7) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (26) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (2) Spectrophotometry (SP) (1) 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