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) (12) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (31) Sample Type Blood (1) Serum or Plasma (1) Test Area Therapeutics (2) Test Category Acids (3) Alcohols (3) Analgesics (7) Anesthetics (4) Antianxiety (3) Antidepressants (8) (-) Antihistamines (2) Biomarkers (2) Depressants (6) Drugs of Abuse (7) Drugs of Abuse, Therapeutics (1) Gases (4) Industrial/Environmental Toxins (1) Muscle Relaxants (7) Other (2) Plasticizers (2) Sedative/Hypnotics (28) Solvents (4) Therapeutics (10) Volatiles (13) Test Sub-Category Other (2) Test Test Name 3740B Phenyltoloxamine, Blood 3740SP Phenyltoloxamine, Serum/Plasma