Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type (-) Blood (2) Fluid (1) Serum or Plasma (3) Tissue (1) Urine (2) Test Area (-) Therapeutics (2) Test Category Anesthetics (1) Antihypertensives (1) Test Sub-Category (-) Alpha-2 Adrenergic Agonists (1) Amphetamines (1) (-) Antiarrhythmics (1) Antifungals (3) Antihistamines (1) Antimalarials (2) Antiparasitics (1) Antivirals (1) Barbiturates (1) Benzodiazepines (2) Beta Blockers (1) Diuretics (2) GABA Analogues (1) H2 Antagonists (1) Hormones (1) Metals/Elements (1) Non-Benzodiazepines (1) NSAIDs (5) Opiates/Opioids (3) Other (40) Selective Serotonin Reuptake Inhibitors (SSRI) (2) Sulfonylureas (1) Tetracyclics (1) Tricyclic (1) Test Test Name 2186B Guanfacine, Blood 2512B Lidocaine and Metabolite (MEGX), Blood