Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (1) Urine (1) Test Area Therapeutics (2) Test Category Alcohols (6) Analgesics (5) Antiarrhythmics (2) Anticholinergics (3) Antidiabetics (2) Antiepileptics/Antiseizures (12) Antihistamines (7) Antipsychotics (7) Appetite Suppressants (3) Chemicals (1) Cholinesterase Inhibitors (3) (-) Diagnostic Aids (2) Drugs of Abuse (5) Exposure (1) Hallucinogens (15) Herbicides (2) Industrial/Environmental Toxins (1) Perfluorinated Compounds (2) Plasticizers (1) Solvents (3) Therapeutics (14) Vasodilators (3) Volatiles (10) Test Sub-Category (-) Other (2) Test Test Name 9249B Pseudoephedrine vs Ephedrine Differentiation Screen, Blood 9249U Pseudoephedrine vs Ephedrine Differentiation Screen, Urine