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) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (3) Serum or Plasma (3) (-) Urine (2) Test Area Exposure (1) Therapeutics (1) Test Category Analgesics (5) Anticholinergics (2) Antidepressants (2) Antimigraines (1) Diagnostic Aids (1) Metals/Elements (5) NPS/Designer Drugs (3) Opiates/Opioids (1) Pesticides/Insecticides (2) (-) Sedative/Hypnotics (1) Vasodilators (1) (-) Volatiles (1) Test Sub-Category Other (2) Test Test Name 4170U Secobarbital, Urine 4213U Styrene Exposure Profile, Urine