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) (11) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (1) Gas Chromatography (GC) (8) Gas Chromatography/Mass Spectrometry (GC/MS) (6) Headspace Gas Chromatography (GC) (5) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (23) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (13) Ion Specific Electrode (ISE) (1) Sample Type Serum or Plasma (1) (-) Urine (1) Test Area Test Category Test Sub-Category Test Test Name 2541U LSD Screen, Urine