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) (4) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (3) (-) Headspace Gas Chromatography (GC) (1) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (4) Serum or Plasma (1) (-) Urine (1) Test Area Exposure (1) Test Category Depressants (3) Solvents (1) (-) Volatiles (1) Test Sub-Category Other (1) Test Test Name 0021U Acetaldehyde, Urine