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) (-) Fluid (1) Serum or Plasma (2) Urine (1) Test Area Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Alkaloids (1) Antibiotics (1) Antihistamines (1) Antimalarials (1) Barbiturates (1) Benzodiazepines (2) (-) Beta Blockers (2) CNS Stimulants (1) Diuretics (1) Dopamine Antagonists (1) Hormones (1) Hydrocarbons (1) Insecticides (1) Macrominerals (2) Opiates/Opioids (11) Other (45) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Tetracyclics (2) Toxic Elements (2) Trace Elements (3) Test Test Name 3043B Metoprolol, Blood 3043FL Metoprolol, Fluid