Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme-Linked Immunosorbent Assay (ELISA) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) (-) Hair (1) Serum or Plasma (2) (-) Urine (1) Test Area Drugs of Abuse (1) Therapeutics (1) Test Category Acids (1) Analgesics (5) Antidepressants (4) Antiepileptics/Antiseizures (2) Antimicrobials (1) Antiparkinsons (1) Antipsychotics (3) Biomarkers (2) (-) Bronchodilators (1) Metals/Elements (8) (-) Other (1) Sedative/Hypnotics (1) Solvents (2) Stimulants (1) Sympathomimetic Amines (1) Volatiles (1) Test Sub-Category Other (2) Test Test Name 4387U Theophylline, Urine 6945H Therapeutic and Drugs of Abuse Screen, Hair