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) (8) (-) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (26) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (12) Inductively Coupled Plasma/Optical Emission Spectrometry (ICP/OES) (1) Sample Type Blood (4) Serum or Plasma (2) (-) Urine (1) Test Area Test Category Test Sub-Category Test Test Name 4355U Tetrahydrofuran, Urine