Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (3) Serum or Plasma (2) (-) Urine (2) Test Area Exposure (1) Therapeutics (1) Test Category Acids (1) Antidepressants (1) Antiepileptics/Antiseizures (2) Antipsychotics (2) Biomarkers (1) (-) Bronchodilators (1) Metals/Elements (1) Solvents (2) (-) Volatiles (1) Test Sub-Category (-) Other (2) Test Test Name 4387U Theophylline, Urine 4658U Trichloroethylene Exposure, Urine