Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (32) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (6) Hematofluorometry (H) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (86) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (6) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (25) (-) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (3) Spectrophotometry (SP) (2) Sample Type (-) Blood (1) (-) Hair (1) Nails (1) (-) Serum or Plasma (1) Urine (1) Test Area Test Category Test Sub-Category Test Test Name 4190B Silicon, Blood 4190SP Silicon, Serum/Plasma 4844H Zinc, Hair