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 Analgesics (11) Antiarrhythmics (1) Anticholinergics (6) Antidepressants (6) Antiemetics (1) Antiepileptics/Antiseizures (1) Antihypertensives (2) Antipsychotics (2) Antitussives/Cough Suppressants (3) Decongestants (4) Depressants (5) (-) Diagnostic Aids (2) Sedative/Hypnotics (6) Stimulants (2) Test Sub-Category Other (2) Test Test Name 9249B Pseudoephedrine vs Ephedrine Differentiation Screen, Blood 9249U Pseudoephedrine vs Ephedrine Differentiation Screen, Urine