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) (3) Gas Chromatography (GC) (7) (-) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) (-) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type Blood (3) Serum or Plasma (2) (-) Urine (2) Test Area Exposure (2) Test Category Biomarkers (1) Solvents (1) Test Sub-Category Cyanide (1) Opiates/Opioids (1) (-) Other (2) Test Test Name 4355U Tetrahydrofuran, Urine 4472U Thiosulfate, Urine