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) Test Area Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Alkaloids (3) Alpha-1 Adrenergic Agonists (1) Alpha Blockers (2) Antibiotics (2) Antifungals (2) Antispasmodics (3) Antivirals (1) Barbiturates (7) Benzodiazepines (13) Beta Blockers (10) Biomarkers (2) (-) Calcium Channel Blockers (2) CNS Stimulants (4) Diuretics (2) Dopamine Antagonists (3) GABA Analogues (3) Insecticides (1) NSAIDs (13) Opiates/Opioids (12) Other (69) Phenothiazines (2) Proton-Pump Inhibitors (2) Selective Serotonin Reuptake Inhibitors (SSRI) (5) Serotonin-Norepinephrine Reuptake Inhibitors (SNRI) (3) Stimulants (3) Sympathomimetic Agents (3) Synthetic Cathinone (3) Test Test Name 3158B Nifedipine, Blood 3158SP Nifedipine, Serum/Plasma