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 (7) Anesthetics (1) Antidepressants (5) Antidiabetics (2) Antiepileptics/Antiseizures (19) Antihistamines (4) Antihypertensives (9) Antimicrobials (4) Antipsychotics (9) Appetite Suppressants (3) Decongestants (11) (-) Diagnostic Aids (2) Test Sub-Category Other (2) Test Test Name 9249B Pseudoephedrine vs Ephedrine Differentiation Screen, Blood 9249U Pseudoephedrine vs Ephedrine Differentiation Screen, Urine