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) (1) Sample Type Blood (1) Fluid (1) (-) Serum or Plasma (1) Urine (1) Test Area Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category Alkaloids (1) Antibiotics (1) Antihistamines (2) Antimalarials (1) Benzodiazepines (1) (-) Beta Blockers (1) CNS Stimulants (1) Diuretics (1) Hormones (1) Opiates/Opioids (5) Other (16) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (1) Test Test Name 3043SP Metoprolol, Serum/Plasma