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 (1) Urine (1) Test Area Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Alkaloids (2) Antibiotics (2) Antihistamines (3) Antimalarials (2) Barbiturates (2) Benzodiazepines (2) (-) Beta Blockers (2) CNS Stimulants (2) Diuretics (2) Dopamine Antagonists (2) Hormones (2) Hydrocarbons (1) Insecticides (1) Macrominerals (2) Opiates/Opioids (18) Other (78) Phenothiazines (1) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (2) Tetracyclics (4) Toxic Elements (2) Trace Elements (4) Test Test Name 3043B Metoprolol, Blood 3043SP Metoprolol, Serum/Plasma