Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzymatic Assay (EZA) (1) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (2) Gas Chromatography (GC) (7) Headspace Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (12) Spectrophotometry (SP) (1) Sample Type Serum or Plasma (1) Urine (1) Test Area Drugs of Abuse (2) Test Category (-) Hallucinogens (2) Test Sub-Category Other (2) Test Test Name 2541SP LSD Screen, Serum/Plasma 2541U LSD Screen, Urine