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) (-) Serum or Plasma (1) Urine (1) Test Area Therapeutics (2) Test Category (-) Stimulants (2) Test Sub-Category (-) Alkaloids (2) Alpha/Beta Adrenergic Agonists (2) Test Test Name 4380B Theobromine, Blood 4380SP Theobromine, Serum/Plasma