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) (3) Sample Type (-) Blood (1) (-) Fluid (1) Serum or Plasma (1) (-) Urine (1) Test Area Therapeutics (3) Test Category Antihypertensives (3) Test Sub-Category Alkaloids (2) Antibiotics (1) Antihistamines (1) Antimalarials (1) Barbiturates (2) Benzodiazepines (3) (-) Beta Blockers (3) CNS Stimulants (3) Diuretics (1) Dopamine Antagonists (2) Hormones (2) Hydrocarbons (1) Insecticides (1) Macrominerals (3) Opiates/Opioids (19) Other (76) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (2) Tetracyclics (4) Toxic Elements (2) Trace Elements (5) Test Test Name 3043B Metoprolol, Blood 3043FL Metoprolol, Fluid 3043U Metoprolol, Urine