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) (11) (-) Headspace Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (17) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type Blood (2) (-) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (2) Test Category Solvents (2) Test Sub-Category (-) Other (2) Test Test Name 4355SP Tetrahydrofuran, Serum/Plasma 4355U Tetrahydrofuran, Urine