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 Drugs of Abuse (7) Postmortem (2) (-) Therapeutics (2) Test Category Anesthetics (5) Antianxiety (2) Antiarrhythmics (4) Anticholinergics (3) Antidepressants (7) Antiepileptics/Antiseizures (3) Antihistamines (3) Antipsychotics (5) Antitussives/Cough Suppressants (3) (-) Diagnostic Aids (2) Muscle Relaxants (4) Sedative/Hypnotics (5) Vasodilators (1) Test Sub-Category Alpha/Beta Adrenergic Agonists (1) CNS Stimulants (1) (-) Other (2) Test Test Name 9249B Pseudoephedrine vs Ephedrine Differentiation Screen, Blood 9249U Pseudoephedrine vs Ephedrine Differentiation Screen, Urine